Le, Tao. First aid for the USMLE step 2 CS / Tao Le [et al]. - NewYork: McGraw Hill, 2004. - xv,280p. - USMLE step two CS . Includes index. ISBN: 007142184X Subjects--Topical Terms: Physicians --Licenses --United States --Examinations --Study guides. LC Class. No.: R 834 .5 LE 2004.