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Studying insects /
by Sadler, Doug,
Publication:
Toronto : Ryerson Educational Division, 1976
. 127 p. [1] p. :
24 cm.
Date:1976
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(1),
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Les plantes /
by Sadler, Doug,
Publication:
Montréal : McGraw-Hill, 1975
. vii, 131 p. :
, Traduction de Studying plants. | Matériel scolaire.
23 cm.
Date:1975
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Copies available:
(1),
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