Why is the air dirty? / by Isaac Asimov.

Why is the air dirty? / by Isaac Asimov.

Monografías

English

083680743X

504

363.73/92 (Edición 20)

A Gareth Stevens Children's Books ed.

Milwaukee : G. Stevens Children's Books, c1992.

24 p. : col. ill. ; 27 cm.

(Ask Isaac Asimov)

A simple discussion of the causes and effects of air pollution and some ways to help prevent it

Includes bibliographical references (p. 23) and index

Why is the air dirty? / by Isaac Asimov.


					

Why is the air dirty? / by Isaac Asimov.

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