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Ericsson, R. J., and Youngdale, G. A., J. Reprod. Fertil., 21, 263 (1970).
Kirton, K. T., Ericsson, R. J., Miller, W. L., Cornette, J. C., Forbes, A. D., and Duncan, G. W., Fed. Proc., 28, 705 (1969).
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ERICSSON, R., YOUNGDALE, G. Antifertility Intermediate. Nature 226, 386 (1970). https://doi.org/10.1038/226386a0
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DOI: https://doi.org/10.1038/226386a0