TY  - BOOK
AU  - Robertson,William
TI  - Tin: its production and marketing 
T2  - Croom Helm commodity series
SN  - 0709922027
PY  - 1982///
CY  - London
PB  - Croom Helm
KW  - Tin industry
N1  - Photocopy (IKMAS); Bibliography : p. 204-209
ER  -