00283nam a2200109Ia 4500008004100000041000800041084001000049100001900059245004100078260004000119653001400159160808s1972    xx            000 0 eng d  aeng  aL2CC  aMedawar, P. B.  aHope of Progress /cby P. B. Medawar  aLondon :bMethuen & Co. Ltd,c1972.  aMediciene