Elements of Industrial Hazards Health, Safety, Environment and Loss Prevention Tatiya Ratan Raj Innbundet / 2010 / Engelsk
Surface and Underground Excavations Methods, Techniques and Equipment Tatiya Ratan Raj Innbundet / 2013 / Engelsk
Elements of Industrial Hazards Health, Safety and Environment Tatiya Ratan Raj Annet format / 2012 / Engelsk
Surface and Underground Excavations Methods, Techniques and Equipment Tatiya Ratan Raj Heftet / 2018 / Engelsk
Elements of Industrial Hazards Health, Safety, Environment and Loss Prevention Tatiya Ratan Raj Heftet / 2017 / Engelsk
