TY - RPRT TI - Basilar impression (platybasia). AU - J L POPPEN AU - H H AMMERMAN AU - G O HELDEN PY - 1953 DO - 10.1016/s0039-6109(16)33952-4 UR - https://pubmed.ncbi.nlm.nih.gov/13064677/ ID - 13064677 ER -