?url_ver=Z39.88-2004&rft_id=10.1109%2FBEIAC.2012.6226080&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Malakahmad%2C+A.&rft.aulast=Malakahmad&rft.aufirst=A.&rft.title=Application+of+occupational+health+and+safety+management+system+at+sewage+treatment+plants&rft.date=2012&rft.isbn=9781467304269&rft.genre=proceeding