TY - RPRT TI - Validation of a questionnaire for assessing physical work load. AU - S Hollmann AU - F Klimmer AU - K H Schmidt AU - H Kylian PY - 1999 DO - 10.5271/sjweh.412 UR - https://pubmed.ncbi.nlm.nih.gov/10360465/ ID - 10360465 ER -