TY - RPRT TI - Cephalometric roentgenography for nonhuman primates utilizing a surgically implanted head positioner. AU - A L Ness AU - O M Merrill AU - J R Hansel PY - 1975 DO - 10.1002/ajpa.1330430118 UR - https://pubmed.ncbi.nlm.nih.gov/808139/ ID - 808139 ER -