Consequences of relative land scarcity / Nel van Hekken and Bonno Thoden van Velzen
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Consequences of relative land scarcity / Nel van Hekken and Bonno Thoden van Velzen
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Paper presented at the seminar ...... g". Leiden 7-11 December, 1970
Part 2: The process of levelling and suppressing. 52 p
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Consequences of relative land scarcity
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Consequences of relative land scarcity / Nel van Hekken and Bonno Thoden van Velzen