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Oxford [u.a.]: Blackwell Scientific Publ. [u.a.], 1969
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The Hague: Centre for agricultural Publ. and Docum. Wageningen, 1977
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New York, NY [u.a.]: Plenum Press, 1985
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Amsterdam: Noord-Hollandsche Uitgevers Maatschappij, 1967
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Amsterdam [u.a.]: Elsevier, 1975
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Dordrecht [u.a.]: Kluwer Academic Publ., c2004
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Paris: Unesco, 1983