A theoretical and laboratory evaluation of a portable direct particulate mass concentration instrument / 
Burce Almich ... [et al.] 
 - Washington, D. C. :  United States Government Printing Office,  1975 
 - 33 p. ;  29 cm. 
<br/><br/> NIOSH technical information 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Diagnosis, Laboratory<br/>Clinical chemistry<br/>Pathology--Laboratory manuals
<br/><br/><label>Dewey Class. No.: </label>616.075