Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ro Soonchang and KONDO Kyoji,Variations in Feminization of the Gonads of Male Embryos Given Various Amounts of Estrogen on Day 4 of Incubation in the Japanese Quail,Nihon Chikusan Gakkaiho,1346907X,Japanese Society of Animal Science,1977,48,12,766-771,https://cir.nii.ac.jp/crid/1390282680168673920,https://doi.org/10.2508/chikusan.48.12_766