1995 First aid for the USMLE step 1 : a student to student guide / Vikas Bhushan, Tao Lee, Chirag Amin - 5th ed - Norwalk, Connecticut : Appleton & Lange, c1995. - xxv, 220 p. : ill. 28 cm. ISBN: 0838525938 LC Class. No.: R834 / .B58 1995