paperback. Condition: Good. Ship out in 2 business day, And Fast shipping, Free Tracking number will be provided after the shipment.Paperback. Pub Date :1988-01 Pages: 196 Publisher: Science Press sheets: 6.375 book cover creases and a small tear mouth. squeeze traces some of the pages. the whole more than 8.5 product.Four Satisfaction guaranteed,or money back.