An investigation of instructional material needs for machine shop training /

Bibliographic Details
Main Author:	Porter, Harold William, 1907-
Format:	Thesis Microform Book
Language:	English
Published:	[Place of publication not identified] : [publisher not identified] ; 1948.
Subjects:	Machine shops > Textbooks.

Description
Item Description:	Vita. Microform.
Physical Description:	vii, 164 leaves : illustrations