Chemical week  [electronic resource]. 
 Chemicalweek 

 -  McGraw-Hill] 
 - Weekly 
 - v. 68, no. 20- June 1951- 
<br/><br/> Vols. for <2004-> published by Chemical Week Associates.  Trade Publication 
<br/><br/>Vol. 144, no. 1/2 (Jan. 4/11, 1989) misnumbered as v. 145, no. 26. Vol. 145, no. no. 1 (July 5, 1989) misnumbered as v. 144, no. 27. Vol. 127. no. 18 and v. 131, no. 10 never published. Vol. 158, no. 42 omitted in numbering. Vol. 161, no. 46 not published. 
<br/><br/>Supplements accompany some issues. 
<br/><br/>
<br/><br/><label>ISSN: </label>0009-272X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemical industry--Periodicals.<br/>Chemical Industry--Periodicals.
<br/><br/><label>LC Class. No.: </label>TP1  / .C37 
<br/><br/><label>National Library of Medicine Call No.: </label>W1  / CH271V