TY - RPRT TI - An interlock system for a superficial x-ray set. AU - J BOWEN AU - J C JONES AU - K F ORTON PY - 1956 DO - 10.1259/0007-1285-29-343-407 UR - https://pubmed.ncbi.nlm.nih.gov/13342411/ ID - 13342411 ER -