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The elasticity of demand of substitute goods
Fanno, Marco, (1998)
Optimization over Leontief substitution systems
Koehler, Gary J., (1975)
Costminimisation and substitution
Zon, A. H. van, (1983)
Copra and coconut oil
Snodgrass, Katharine, (1928)
Prices of wool and wool products
Snodgrass, Katharine, (1919)