Gradwohl, R. B. H. <br/><br/>
The newer methods of blood and urine chemistry /  
by R.B.H. Gradwohl and A.J. Blaivas. 
 - 2nd ed. 
 - London :   Henry Kimpton,   1920 ( 
 - 418 p., 4 lám. :   il. ;   23 cm.