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Optimal migration policies : an analytical approach ; P. 1
Willekens, Frans - In: Regional science & urban economics 9 (1979) 4, pp. 345-367
Persistent link: https://www.econbiz.de/10003011574
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Rural-urban population projections for Kenya and implications for development
Shah, Mahendra M.; Willekens, Frans - 1978
Persistent link: https://www.econbiz.de/10000655765
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Entropy, multiproportonal, and quadratic techniques for inferring patterns of migration from aggregate data
Willekens, Frans - In: Advances in multiregional demography, (pp. 83-124). 1981
Persistent link: https://www.econbiz.de/10003011568