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American Journal of Obstetrics and Gynecology|October 1, 1979
New long-acting injectable microcapsule contraceptive systemL R Beck, D R Cowsar, D H Lewis, et al.
American Journal of Obstetrics and Gynecology|August 1, 1981
Clinical evaluation of injectable biodegradable contraceptive systemL R Beck, R A Ramos, C E Flowers, et al.
Biology of Reproduction|February 1, 1983
Poly(DL-lactide-co-glycolide)/norethisterone microcapsules: an injectable biodegradable contraceptiveL R Beck, V Z Pope, C E Flowers, et al.
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