An Introduction to Mathematical Modeling

Payment options by U.S. customers include personal check (must clear before shipping), money order, cashiers check, Paypal or credit cards via Abebooks system. Customers outside of U.S. must use credit cards via Abebooks system. All items are subject to prior sale. Items may be held by phone message or email up to 5 days. Samuel H. Rokusek Address: 10707 88th Street Pleasant Prairie, WI, 53158, USA Email address: srokusek@att.net Phone: (262)-694-8851

If you are a consumer you can withdraw from the contract in accordance with the following. Consumer means any natural person who is acting for purposes which are outside his trade, business, craft or profession.

Information regarding the right of withdrawal

Statutory right to withdraw

You have the right to withdraw from this contract within 14 days without giving any reason.

The withdrawal period will expire after 14 days from the day on which you acquire, or a third party other than the carrier and indicated by you acquires, physical possession of the last good or the last lot or piece.

To exercise the right of withdrawal, electronically fill in and submit a clear statement on our website, under "My Purchases" in "My Account". We will communicate to you an acknowledgement of receipt of such a withdrawal on a durable medium (e.g. by e-mail) without delay.

To meet the withdrawal deadline, it is sufficient for you to send your communication concerning your exercise of the right of withdrawal before the withdrawal period has expired.

Effects of withdrawal

If you withdraw from this contract, we will reimburse to you all payments received from you, including the costs of delivery (except for the supplementary costs arising if you chose a type of delivery other than the least expensive type of standard delivery offered by us).

We may make a deduction from the reimbursement for loss in value of any goods supplied, if the loss is the result of unnecessary handling by you.

We will make the reimbursement without undue delay, and not later than 14 days after the day on which we are informed about your decision to withdraw from this contract.

We will make the reimbursement using the same means of payment as you used for the initial transaction, unless you have expressly agreed otherwise; in any event, you will not incur any fees as a result of such reimbursement.

We may withhold reimbursement until we have received the goods back, or you have supplied evidence of having sent back the goods, whichever is the earliest.

You shall send back the goods or hand them over to Samuel H. Rokusek, Bookseller, Pleasant Prairie, Wisconsin, U.S.A., +1 (262) 287-7113, without undue delay and in any event not later than 14 days from the day on which you communicate your withdrawal from this contract to us. The deadline is met if you send back the goods before the period of 14 days has expired. You will have to bear the direct cost of returning the goods. You are only liable for any diminished value of the goods resulting from the handling other than what is necessary to establish the nature, characteristics and functioning of the goods.

Exceptions to the right of withdrawal

The right of withdrawal does not apply to:

1. The delivery of newspapers, journals or magazines with the exception of subscription contracts; and
2. The supply of digital content which is not supplied on a tangible medium (e.g. on a CD or DVD) if you accepted when you placed your order that we could start to deliver it, and that you could not withdraw once delivery had started.

Orders usually ship within 2 business days. Shipping costs for U.S. customers are Media Mail,$5.00 with $2 additional for each additional piece in the shipment. For domestic media mail postage greater than the $5.00 actual, we would adjust total to cover the actual cost. Priority Mail rate is based on a Priority Mail Flat Rate Box. Reduction in postage is made for packaged weights and postal zone combinations that require less postage. Large books, sets and international shipping will be quoted. Insurance, IF available AND IF requested and will be charged at cost. Books are wrapped, protected from moisture, padded and packaged in a box/cardboard. All shipments made with delivery confirmation cost included. Single-Piece First Class Package International shipping: Rates are based on books weighing 2 LB, or 32 ounces If your total packaged weight (with a maximum of 64 ounces) and Country Price Group combination for the shipment requires additional postage, we will adjust the order and request approval. If the total packaged weight and Country Price Group combination for the shipment requires less postage we will adjust/lower the postage in the order. Shipments to foreign destinations with packaged weights greater than 4 pounds (greater than 1.8 kg) require priority shipment and rates. If you have a question concerning shipment costs or specific shipping needs please contact us prior to ordering. Priority Mail International Flat Rate: Rates are based on the total packaged weight of the item packaged in our supplied box and packaging materials with a total packaged weight of 5 lbs. or 80 ounces and the Country Price group for the destination. If the total packaged weight (in my own supplied boxes) and Country Price Group combination for the shipment requires less postage we will adjust/lower the postage in the order and ship in that manner. If the United State Postal Service sized Flat Rate Box/Envelope can be used in the destination country price group for reduced postage versus the quoted postage, we will adjust the rates to reflect that combination and reduce the postage accordingly. If the size/weight/destination country price group of the item requires additional postage, we will adjust the order and request approval from the buyer. Again INTERNATIONAL DESTINATIONS/BUYER PLEASE NOTE, IF YOU WANT AN ESTIMATE OF THE POSTAGE, PLEASE REQUEST THAT INFORMATION BEFORE PLACING THE ORDER.