1. Foetal retrognathia and the cranial base;Birch;Angle Orthodont.,1968
2. Sagittal growth of the nasomaxillary complex during the second trimester of human prenatal development;Burdi;J. Dent. Res.,1965
3. The growth of the foetal skull;Ford;J. Anat. (Lond.),1956
4. Fundamental statistics in psychology and education;Guilford,1965
5. Growth of the craniofacial complex of the human fetus from twelve to nineteen weeks;Houpt,1968