Gregory, Arthur R. <br/><br/>
Special hazard review with control recommendations for ethylene thioaldehydes / 
by Arthur R. Gregory 
 - Washington, D.C. :  United States Department of Health, Education, and Welfare,  1978 
 - Various pagings ;  30 cm. 
<br/><br/> Cover title 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Thioaldehydes--Process control<br/>Control theory
<br/><br/><label>Dewey Class. No.: </label>547.065