TY  - BOOK
AU  - Lawrence,F.C., Humphreys,  E. N.
AU  - x
TI  - Marginal  consting,: x
SN  - x
U1  - 657.4/LAM 
PY  - 1960///
CY  - Lond
PB  - Macdonald  and  Evans
KW  - Cost  Accounting
ER  -