Sumner, James B.   1887-1955 <br/><br/>
Chemistry and methods of enzymes / 
by James B. Sumner and G. Fred Somers 
 - 2nd ed., rev. 
 - xi, 415 p. :  il. ;  24 cm. 
<br/><br/>Incluye referencias bibliográficas e índice 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ENZIMAS
<br/><br/><label>Dewey Class. No.: </label>572.7  / C4 1947