Abortion surveillance program of the center for disease control.

od Smith, J C, Bourne, J P
Wydane 1973

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

od Kahn, J. B., Bourne, J. P., Asher, J. D., Tyler, C. W.
Wydane 1971

Medical complications from induced abortion by the super coil method.

od Bourne, J P, Berger, G S, Haber, R J, Tyler, C W, Keith, L, Knisely, K, Zackler, J
Wydane 1974