title: The diffusion of abortion facilities in the northeastern United States, 1970--1976.
mesh_terms: D000028:Abortion, Induced; D003710:Demography; D005260:Female; D005843:Geography; D006268:Health Facilities; D006275:Health Facility Planning; D006801:Humans; D008962:Models, Theoretical; D011247:Pregnancy; D014481:United States