00993cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040001800111042001200129050001700141100002400158245016800182260003500350300008800385410005200473500005000525504002500575650003600600700004000636700006300676gs 64000439 DLC20260227111415.0780216s1961    nr bf    b   f000 0 eng    ags 64000439   a(OCoLC)3645100  aDLCcTxUdDLC  apremarc00aTN810.N5bD41 aDe Swardt, A. M. J.14aThe coal resources of Nigeria,cby 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.  a[Lagos,bGovt. Printer]c1961.  ax, 100 p.bplates, map, tables.c24 cmaand portfolio (fold. maps, diagrs.)c25 cm.20aGeological Survey of Nigeria.tBulletinvno. 28  aOrignial imprint date covered by label: 1963.  aBibliography: p. 61. 0aCoal mines and miningzNigeria.1 aCasey, Owen Patrick,ejoint author.12aJefford, G.tThe physical and chemical resources of coals.