TY  - BOOK
AU  - Robertson William
TI  - Tin:  Its production and marketing   
T2  - Croom Helm commodity series
SN  - 0709922027
U1  - X9(F145).54.1.N7, M2 
PY  - 1982///
CY  - London
PB  - Croom Helm UK        
KW  - Technological Industry
ER  -