HULLEY, S . DESIGNING CLINICAL RESEARCH / Textual Documents NULL. - 3 / . - NULL : LWW, WOLTERS, KLUWER , 2007. - 367 : XV ; A4 . ISBN: 9780781782104 3949.53 Subjects--Topical Terms: PSM Dewey Class. No.: 610.72 / HUL/CUM