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From Embryology
Stockard CR. and George N. Papanicolaou GN. The existence of a typical oestrous cycle in the guinea-pig— with a study of its histological and physiological changes. 225
Stockard CR. and George N. Papanicolaou GN. The existence of a typical oestrous cycle in the guinea-pig— with a study of its histological and physiological changes. 225