TY - RPRT TI - Radiation-induced extraskeletal osteosarcoma. AU - L I Alpert AU - I F Abaci AU - S Werthamer PY - 1973 DO - 10.1002/1097-0142(197306)31:6<1359::aid-cncr2820310609>3.0.co;2-f UR - https://pubmed.ncbi.nlm.nih.gov/4350957/ ID - 4350957 ER -