TY  - BOOK
AU  - Harrison, Tinsley Randolph.
AU  - Stone, Richard M.
TI  - Harrison's principles of internal medicine: PreTest self-assessment and review 
SN  - 0070519854
PY  - 1991///
CY  - New York
PB  - McGraw-Hill
KW  - Internal medicine
KW  - examination questions
N1  - For use with the 12th ed. of Harrison's principles of internal medicine. 1991
ER  -