D. G. M. S. circulars:
Kaku, L.C
D. G. M. S. circulars: classified in order of regulations, rules & sections and govt. notifications & recommendations of safety conferences : 1935 to 2012 : A book of day to day reference for coal, metalliferous and oil mines - Dhanbad : Lovely Prakashan, 2013 - 1179p.
9788179561355
Mining
622 / KAK
D. G. M. S. circulars: classified in order of regulations, rules & sections and govt. notifications & recommendations of safety conferences : 1935 to 2012 : A book of day to day reference for coal, metalliferous and oil mines - Dhanbad : Lovely Prakashan, 2013 - 1179p.
9788179561355
Mining
622 / KAK