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Soil Survey Reports of the Land Development Department, Thailand. No. 85: Method and Procedure by Photo-Interpretation for Survey of Rubber Plantations in Thailand. Report SSR-85-1971. [Monograph]
Schwaar, D.C. \ 1971
mapping - Asia - Thailand
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Soil Survey Reports of the Land Development Department, Thailand. No. 74: Transfer of Boundaries from Air-Photo on to Base Map. Report SSR-74-1969. (+ maps) [Monograph]
Schwaar, D.C. \ 1969
mapping - Asia - Thailand
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Zur Bewertung von Bodenverbesserungsmitteln durch Bestimmung von Zersetzungsgrad und Rotte der organischen Substanz. Geologisches Jahrbuch Reihe F, Bodenkunde Heft 24. [Monograph]
Schwaar, J. \ Jacob, H. \ Hufnagel, H. \ 1990
geology - Europe - Germany
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Soil Survey Reports of the Land Development Department Ministry of National Development. No 83: Air-Photos and Air-Photo Interpretation in Soil Survey. [Monograph]
Schwaar, D.C. \ 1970
aerial photography - remote sensing - Asia - Thailand
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Zur Bewertung von Bodenverbesserungsmitteln durch Bestimmung von Zersetzungsgrad und Rotte der Organischen Substanz. Geologisches Jahrbuch, Reihe F, Heft 24. [Monograph]
Schwaar, J. \ Jacob, H. \ Hufnagel, H. \ 1990
help
Vegetation and Land Use in Sierra Leone: a Reconnaissance Survey. [Monograph]
Gordon, O.L.A. \ Kater, G. \ Schwaar, D.C. \ 1979
vegetation - land use - Sierra Leone
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