“Aquaculture is an important aspect of homestead polyculture, for it facilitates the management of a variety of crops in a single production area.”
p, 125
The Owner-Built Homestead (1977)
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Ken Kern 48
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"History and Industry Location: The Case of the Manufacturing Belt", The American Economic Review, Vol. 81, No. 2, (May, 1991)
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Michael A. Jackson in: K. De Grave (ed.) Formalism & Intuition in Software Development; A conversation with Michael A. Jackson conducted by Edgar G. Daylight and Bas van Vlijmen. 2015
R. Hartshorne, S.N. Dicken (1935) "A classification of the agricultural regions of Europe and North America on a uniform statistical basis". Annals of the Association of American. Vol 25 (2), p. 99