@book{27447,
	author = {International Geological Congress and Prigorovski, Mikhail Mikhailovich,},
	title = {The coal resources of the USSR;},
	publisher = {Chief editorial office of the mining-fuel and geological prospecting literature,},
	year = {1937.},
	address = {Leningrad,},
	note = {At head of title: International geological congress, XVII session, USSSR, 1937.}
}