Helena air quality survey -- 1984
By: submitted to Lewis and Clark County Health Department ; submitted by Mountain International, Inc., John S. Fitzpatrick, Ph.D., project manager
Contributors: Helena (Mont.); Mountain International, Inc
Publisher: Mountain International
Published: 1984
Place of publication: Helena, Montana
Language: eng
Subjects: Air Quality Management; Survey; Air; Pollution
Notes: "July 16, 1984"--Cover.