Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "Society for the Study of Fertility and Perry, J. S. (John Sherwood) and Rowlands, I. W.","Biology of reproduction in mammals : proceedings of the symposium of the Society for the Study of Fertility held in Nairobi, Kenya, April 1968",,Blackwell Scientific Publications,1969,Journal of reproduction and fertility. Supplement,,,,https://cir.nii.ac.jp/crid/1130000798152825216