z 



ILOK 

 V.5 



Biological 



& IViedica! 



Reference 



Poggendorff , Johann Christian 

 Biographisch-literarisches 

 Handwörterbuch zur Geschichte 

 der exacten Wissenschaften 



PLEASE DO NOT REMOVE 

 CARDS OR SLIPS FROM THIS POCKET 



UNIVERSITY OF TORONTO LIBRARY 



(n 



