00357nam a22001097a 4500008004100000082001000041100001800051245009100069260003600160300002600196650002500222160617b        xxu||||| |||| 00| 0 eng d  a556.9  aBloomfield, K  aThe Geology of the Nkana Coalfield, Karonga District:bGeological survey Bulletin No.8  aZombabGovernment Printerc1967  a36p.btab., fig.,maps  2geology of coalfield