Welcher, Frank Johnson  (1907- ). <br/><br/>
Organic analytical reagents.  Vol. 1 / 
by Frank J. Welcher. 
 - 2nd printing. 
 - Toronto ;  New York :  Van Nostrand,  cop. 1947. 
 - XV, 442 s. ;  22 cm. 
<br/><br/> Indeks. 
<br/><br/>Bibliogr. przy rozdz. Indeks. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chemia--próby i odczynniki.
<br/><br/><label>Universal Decimal Class. No.: </label>547