1. Cleft palate in Montana: a 10-year report;Bardanouve;Cleft Palate Journal,1969
2. Factors associated with congenital cleft lip and cleft palate in Pacific Northwest;Beder;Oral Surgery,1956
3. Birth order and cheilo-grapho-palato-schisis;Bethmann;Cleft Palate Journal,1969
4. Incidence of clefts in New York City;Conway;Cleft Palate Journal,1966
5. Birth variables and the incidence of cleft palate;Donahue;Cleft Palate Journal,1967