Open AccessCircular of the Bureau of Standards no. 447:
Author(s) -
John L. Everhart,
W. Earl Lindlief,
James Kanegis,
Pearl G. Weissler,
Frieda siegel
Publication year - 1943
Language(s) - English
Resource type - Reports
DOI - 10.6028/nbs.circ.447
Subject(s) - geography , library science , computer science