TY  - BOOK
AU  - Pratten C F
TI  - Economices of scale in manufacturing industry
T2  - University of Cambridge, Applied Economics (Deptt 0f-), Occasional Papers.28
U1  - X9:2.3.N7, L1 
PY  - 1971///
CY  - London
PB  - Cambridge University Press        
ER  -