Pori’r Slipiau

ABCChDDdEFFfGNgHIJLLlMNOPPhRRhSTThUWY

Trawsgrifiad y Slip

< I'r Slip BlaenorolI'r Slip Nesaf >3c-010648

cost1 

costau gweithredol net – net operating costs

Hyder, Datganiad dros dro (1998) 12

1998