Filtering by: Contributor Ballenger, Martha Remove constraint Contributor: Ballenger, Martha Contributor Leone, Lucile P. Remove constraint Contributor: Leone, Lucile P. Collection PA Implementation Era (1966-1972) Remove constraint Collection: PA Implementation Era (1966-1972) Subject Hershey, Nathan Remove constraint Subject: Hershey, Nathan Subject Leone, Lucile Petry, 1902- Remove constraint Subject: Leone, Lucile Petry, 1902- Subject National Academy of Sciences (U.S.) Remove constraint Subject: National Academy of Sciences (U.S.) Subject Professional Competence Remove constraint Subject: Professional Competence Subject Program Development Remove constraint Subject: Program Development Subject Yarmolinsky, Adam Remove constraint Subject: Yarmolinsky, Adam Year 1970 Remove constraint Year: 1970