00313nam a2200121Ia 450000500170000000800410001702200180005808200080007610000130008424500580009726000280015530000080018320260504110810.0260504s9999||||xx |||||||||||||| ||und||  a81-8448-086-5  a636  aGupta SK 0aBasic Principles of Clinical Research and Methodology  anew delhibjaypeec2007  a504