00300nam a2200109Ia 450000500170000000800410001708200120005810000180007024500510008826000430013930000080018220260224040823.0260224s9999||||xx |||||||||||||| ||und||  a574 HOL  aHolman, H.H.  0aBiological research method, a practical guide.  aNew York, Hafner Publishers Co. c1962  a262