LEADER 00000nam 2200217 a 4500 001 0044464 003 UkHlHU 007 t 008 000107 0 1979 000 eng 040 UkHlHU 050 4 HC 55 L4 100 0 Lecomber, J. R. C. 245 14 The economics of natural resources. 260 London :|bMacmillan,|c1979. 300 247p. 650 0 Natural resources|xConservation|xEconomic conditions. 946 020 absent -- ISBN check required
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