TY  - BOOK
AU  - Ryan,William James Louden
AU  - Pearce,David W.
TI  - Price theory
SN  - 0333179129 :
U1  - 338.521 RYA/R 
PY  - 1977///
CY  - London
PB  - Macmillan
KW  - Microeconomics
N1  - Includes bibliographical references and index
ER  -