Wyatt, Valerie.

Inventions : an amazing investigation / Valerie Wyatt ; illustrated by Jerzy Kolacz. - [Toronto] : Greey de Pencier, c1987. - 96 p. : ill. ; 23 cm. - Everything you want to know about .

Includes index.

ISBN: 0920775217 :

Nat. Bib. Agency Control No.: 870901133

Subjects--Topical Terms:
Inventions--Juvenile literature.
Inventions--Ouvrages pour la jeunesse.

Dewey Class. No.: j608