Le, Tao. Underground step 1 answers : to the NBME retired & self-test questions : preparation for the USMLE step 1 / Tao Le, Chirag Amin, Vikas Bhusan. - 2d ed., rev. - Orange, CA : Student to Student Medical Pub., 1996. - xi, 463 p. Includes bibliographical references ISBN: 1890061018 Subjects--Topical Terms: Medicine --Examinations, questions. LC Class. No.: R 834.5 LE 1996.