TY  - BOOK
AU  - Gordon, Robert B
AU  - Koopmans, Tjalling C
AU  - Nordhaus, William D
AU  - Skineer, Brian J
TI  - Toward a new Iron age?
SN  - 674898184
CY  - Cambridge
KW  - Copper industry and trade - mathematical model
KW  - Copper model
KW  - Copper resources
KW  - Nonrenewable natural resources - mathematical models
KW  - Resource allocation - mathematical models
ER  -