This book is DUE on the last 

 date stamped below 



NOV 3 1951 



NOV 4 1952 

 APR 9 195 



WAY 1 8 195^ 

 biOMED 



FFR 1 1 



BlOMEft 



mm 



JAN 5 RECT) 



3m-6,'50(550)470 



IB. 



