An investigation of construction workers' safety helmets /

Bibliographic Details

Main Author:	Harper, G. W. (George William), 1908-
Other Authors:	Bowman, C. E., Grider, L. D.
Format:	Book
Language:	English
Published:	Urbana, Ill. : Engineering Publications Office, University of Illinois, [1962]
Series:	Technical report (University of Illinois (Urbana-Champaign campus). Engineering Experiment Station) ; no. 2.
Subjects:	Safety hats.