TY  - BOOK
AU  - Porter,Roy
TI  - The greatest benefit to mankind : : a medical history of humanity / 
SN  - 0393046346
U1  - 610.9 
PY  - 1997///
CY  - New York
PB  - Norton, 
KW  - Medicine
KW  - History
N1  - Includes bibliographical references and index
ER  -