Читать книгу Ontario Teachers' Manuals: Nature Study - Ontario. Department of Education - Страница 46

Crawford: Guide to Nature Study. Copp Clark Co., 90 cents.

Dearness: How to Teach the Nature Study Course. Copp Clark Co., 60 cents.

Shaler: Domesticated Animals. Scribners, $2.50.

Smith: The Uses and Abuses of Domestic Animals. Jarrold & Sons, 50 cents.