Sargent-Welch / 
Sargen-Welch Scientific Co. 
 - Canada :  Sargen-Welch Scientific Co.  1972. 
 - 252  ill. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sargen-Welch
<br/><br/><label>Dewey Class. No.: </label>338.475028  / SAR 1972