TY - RPRT TI - Extraosseous osteosarcoma of the lung. AU - I M Reingold AU - G D Amromin PY - 1971 DO - 10.1002/1097-0142(197108)28:2<491::aid-cncr2820280231>3.0.co;2-7 UR - https://pubmed.ncbi.nlm.nih.gov/5284467/ ID - 5284467 ER -