New Unesco source book for science teaching /
Published by : United nations educational, scientific and cultural Organization. (Unesco :) Physical details: 270 p. : ill. ; 21 cm. ISBN:9231010581.
Subject(s):
Science
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Study and teaching.
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Science
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Experiments
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Juvenile literature.
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Science
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Experiments.
Year: 1973
Item type:
Books
Includes index.
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