Looking at nature /

By Robbins, Robin.. Parkwest, N.Y. : BBC, 1992 . 48 p. : , Originally published: London : BBC Books, 1989. | Includes index. 26 cm.. 0563344989 (hardback) | 0563344997 (pbk.) :

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Earth watch /

By Horton, Penny.. New York : Parkwest, 1992 . 48 p. ; 26 cm.. 0563344075 (hardback) | 0563344083 (paperback)

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Looking at nature /

Earth watch /