Friedman, Gary D.,
Primer of epidemiology / - 2d ed. - New York : McGraw-Hill, c1980. - xii, 288 p. : ill. ;
007022434X
Epidemiology.
614.4 / F74
Primer of epidemiology / - 2d ed. - New York : McGraw-Hill, c1980. - xii, 288 p. : ill. ;
007022434X
Epidemiology.
614.4 / F74