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This is a new edition of a book last published in the early 1970s. It has been completely rewritten, making it shorter and simpler with many more illustrations. It is aimed at parents rather than professionals.
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Book Description Penguin UK, 1999. Paperback. Condition: New. Never used!. Seller Inventory # P110140104933
Book Description Penguin Uk. PAPERBACK. Condition: New. 0140104933 New Condition. Seller Inventory # NEW7.1894030
Book Description Penguin Uk, 1999. Condition: New. book. Seller Inventory # M0140104933
Book Description Penguin Uk, 1999. Condition: New. Seller Inventory # 9780140104936