Abortion surveillance program of the center for disease control.

Por Smith, J C, Bourne, J P
Publicado em 1973

Surveillance of abortions in hospitals in the United States, 1970.

Por Kahn, J. B., Bourne, J. P., Asher, J. D., Tyler, C. W.
Publicado em 1971

Medical complications from induced abortion by the super coil method.

Por Bourne, J P, Berger, G S, Haber, R J, Tyler, C W, Keith, L, Knisely, K, Zackler, J
Publicado em 1974