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Source book for science teaching. - 19th ed. - Paris, Unesco, 1967. - 250 p. : illus., fold. col. map. ; 23 cm.

9231010581

74150700

F***


Science--Study and teaching.
Science--Experiments--Juvenile literature.

Q181 / .U475 1973

507 / UNS
Last Updated on September 15, 2019
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