Are dust counts made by different laboratories comparable?

Creator Personal:
Halley, Paul D.
Title:
Are dust counts made by different laboratories comparable?
Call Number:
P1722
Date:
1946
Description:
Journal article reprint from: Industrial Hygiene Association Quarterly, 7:2 (1946:June 15/22).
Subject Topical:
Dust--Measurement., Dust--Sampling.