00329nam a2200121Ia 4500008004100000082001900041100001900060245003200079260003400111300001200145490002500157650002500182140224s9999    xx            000 0 und d  a581.3.001.5 L1  aHamburgh, Max.  aTheories of differentiation  aLondonbEdward Arnoldcc 1971  ax,171p.  aContemporary Biology  aCell differentiation