Heilmann, P. G. F. (1972). On the formation of red soils in the lower Crati Basin, S. Italy. International Institute for Aerial Survey and Earth Sciences.
Citace podle Chicago (17th ed.)Heilmann, P. G. F. On the Formation of Red Soils in the Lower Crati Basin, S. Italy. Enschede, Netherlands: International Institute for Aerial Survey and Earth Sciences, 1972.
Citace podle MLA (8th ed.)Heilmann, P. G. F. On the Formation of Red Soils in the Lower Crati Basin, S. Italy. International Institute for Aerial Survey and Earth Sciences, 1972.
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