Cover Image

Inventing for fun & profit /

Bibliographic Details
Main Author:	Hallock, Robert Lay
Format:	Book
Language:	English
Published:	New York : Harmony Books, [1978]
Subjects:	Inventions. Patents.

Description
Physical Description:	96 pages : illustrations ; 24 cm.
Bibliography:	Bibliography: page 85.
ISBN:	051753312X (pbk.)