00246 



. 





MINERAL TEEHNDLC 



TWO HOUR RES! 



Return to desk from which borrowed. 



This book is due on the LAST DATE 



and HOUR stamped below. 



MAR 3 1 1950 



MAY 1 2 1950 



0C 4 1950 



"5>_^ 



MAY 9 1951 

 OCT 5 1951 



SEP 28 1951 







s 



RB 16-30m-8,'48(B620s4)4187 



