TY  - BOOK
AU  - Langlois Richard N
AU  -  Robertson Paul L
TI  - Firms markets and economics change :  A dynamic th   
SN  - 0415123852
U1  - X9, N5 
PY  - 1995///
CY  - Newyork
PB  - Routledge United Kingdom        
KW  - Economics-Industry
ER  -