"The present book is a follow-up of the Spanish report on the land-ecological survey, published ... 1993"--P. 23. Includes: Forest soils in the middle Caquetá basin of Colombian Amazonia / door Johanna Maria Lips. Thesis (Ph.D.)--Universiteit van Amsterdam, 1995; Plant diversity, vegetation, and environment in the middle Caquetá basin of Colombian Amazonia / door Judocus Franciscus Duivenvoorden. Thesis (Ph.D.)--Universiteit van Amsterdam, 1994. Includes bibliographical references (p. 300-336).
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