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Why is the air dirty?

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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