Essential textbook for passing the exam. Assumes 130 hours of study time and includes exam-style questions. - Title: Class 4 Hazardous Materials Handler (Otoshu Dai 4 Rui Kikenbutsu Tor扱い者) - Author: Toshihiro Mizuyama - Publisher: Ohmsha - Price: 1600 yen - Pages: 130 hours + 2 sets of actual exam questions Thank you for viewing. Unused. Has been stored at home without being read. No price reduction.