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2. Development and tissue origins of the mammalian cranial base;McBratney-Owen;Dev Biol,2008
3. Early development of the human basicranium: its morphogenic controls, growth patterns, and relations;Burdi,1976
4. Early formation of the basicranium in man;Gasser,1976
5. The Avian Embryo: Structural and Functional Development;Romanoff,1960