1. Placentation;Amoroso,1952
2. Quantitative studies of postnatal changes in synapses in rat superficial motor cerebral cortex;Armstrong-James;Zeitschrift für Zellforschung und Mikroskopische Anatomie,1970
3. Patterns of mammalian reproduction;Asdell,1946
4. On the early development of the isocortex in fetal sheep;Åström;Progress in Brain Research,1967
5. Responses of foetal guinea pigs prematurely delivered;Avery;Genetic Psychology Monographs,1928