TY - RPRT TI - Case report: primary high grade surface osteosarcoma. AU - H Cheung AU - R L Lau AU - S Y Hsu PY - 1995 DO - 10.1016/s0009-9260(05)83058-2 UR - https://pubmed.ncbi.nlm.nih.gov/7889716/ ID - 7889716 ER -