01. 



THE EXPLOITATION OF 



NATURAL ANIMAL 



POPULATIONS 



A Symposium of 

 THE BRITISH ECOLOGICAL SOCIETY 



Durham, 28th -31st March ig6o 



Edited by 

 E. D. LE CREN, 



M.A., M.S. 



Freshwater Biological Association, Ambleside 



AND 



M. W. HOLDGATE, 



M.A., PH.D. 

 Scott Polar Research Institute, Cambridge 



JOHN WILEY & SONS, INC 

 NEW YORK, N.Y. 



