TY  - BOOK
AU  - Saunders Robert J
AU  -  Warford Jeremy J
TI  - Alternative concepts of marginal cost for public u
U1  - "X9(D85):76, L7/UN" 
PY  - 1977///
CY  - New
PB  - York I B R D USA  
KW  - Mechnical
N1  - "World Bank Staff, working papers"
ER  -