00311nam a2200109Ia 450000500170000000800410001708200160005810000210007424500500009526000480014530000080019320260224040822.0260224s9999||||xx |||||||||||||| ||und||  a632.951 ACS  aValkenburg, W.V. 0aBiological correlations--the Hansch approach:  aWashington: American Chemical Societyc1972  a304