Rawlings, G.D. Source assessment: cotton gins / by G.D. Rawlings and R.B. Renzik - Wahngton, D.C. : United States Environmental Protection Agency, 1978 - xii, 68 p. : ill. ; 28 cm. - Environmental protection technology series . Subjects--Topical Terms: Cotton industryPollution Dewey Class. No.: 677.21