Pori’r Slipiau

ABCChDDdEFFfGNgHIJLLlMNOPPhRRhSTThUWY

Trawsgrifiad y Slip

< I'r Slip BlaenorolI'r Slip Nesaf >3c-010653

cost1 

cost berthnasol (eb) (costau perthnasol) – relevant cost

Termau Cyfrifeg (1992) 7

1992