Public health :
Pickett, George E. 1935-
Public health : administration and practice / George Pickett, John J. Hanlon. - 9th ed. - St. Louis : Times Mirror/Mosby College Pub., 1990. - xi, 583 p. : ill. ; 25 cm.
Public health : administration and practice / George Pickett, John J. Hanlon. - 9th ed. - St. Louis : Times Mirror/Mosby College Pub., 1990. - xi, 583 p. : ill. ; 25 cm.