TY  - BOOK
AU  - Sweezy Paul M
TI  - Monopoly and competition in the english coal trade
T2  - Harvard economic studies series ,63
U1  - X9(F551):516.3.M50<--J50, G8 
PY  - 1938///
CY  - Cambridge
PB  - Harvard University Press        
KW  - Coal  Industry
ER  -