Tapp, B. A. Energy and mineral resource systems : an introduction / B. A. Tapp [and] J. R. Watkins. - Cambridge, Eng. : Cambridge University Press, 1990. - vi, 151 p. : ill. ISBN: 0521302870 LCCN: 91013001 Subjects--Topical Terms: Mines and mineral resources.Energy minerals.Power resources.