Hulley, Stephen B.
DESIGNING clinical research : an epidemiologic approach - Philadelphia Lippincot Williams & Wilkins 1988 - xi, 247 p.
781722187
Clinical research
610.7 / DES
DESIGNING clinical research : an epidemiologic approach - Philadelphia Lippincot Williams & Wilkins 1988 - xi, 247 p.
781722187
Clinical research
610.7 / DES