The coal resources of Nigeria,
De Swardt, A. M. J.
The coal resources of Nigeria, by A. M. J. de Swardt and O. P. Casey. With a section on the physical and chemical properties of the coals, compiled by G. Jefford. - [Lagos, Govt. Printer] 1961. - x, 100 p. and portfolio (fold. maps, diagrs.) plates, map, tables. 24 cm 25 cm.
Orignial imprint date covered by label: 1963.
Bibliography: p. 61.
gs 64000439
Coal mines and mining--Nigeria.
TN810.N5 / D4
The coal resources of Nigeria, by A. M. J. de Swardt and O. P. Casey. With a section on the physical and chemical properties of the coals, compiled by G. Jefford. - [Lagos, Govt. Printer] 1961. - x, 100 p. and portfolio (fold. maps, diagrs.) plates, map, tables. 24 cm 25 cm.
Orignial imprint date covered by label: 1963.
Bibliography: p. 61.
gs 64000439
Coal mines and mining--Nigeria.
TN810.N5 / D4