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Humus Dynamisk ?kologi : Fra fattig hede til frodig l?vskov Flemming Juncker:

Humus, its structure and role in agriculture and environment Proc. of the 10th Symp. Humus et planta, held in Prague, in Aug. 19-23, 1991 Ed. by J. Kub?t:

Introducci?n a la ciencia del suelo Eduardo Felipe Casanova Olivo:

Interrelationships between microorganisms and plants in soil Proc. of an Intern. symp., Lublice, Czechoslovakia, June 22-27, 1987 V. Van?ura a. F. Kunc, ed. ; Czeschosl. acad. of sciences:

IFS Workshop on improvement of soil fertility, Nanjing, China, Apr. 18-24, 1993 [Proceedings] Spons. by Intern. found. for science:

Kinetics of soil chemical processes Donald L. Sparks:

Land qualities in space and time Proc. of a symp. organized by the Intern. soc. of soil science (isss), wageningen, The Netherlands, 22-26 Aug. 1988 J. Bouma a. A.K. Bregt (ed.):

Land reclamation An end to dereliction? : Papers presented at the Third Intern. conf. on land reclamation: an end to dereliction?, held at the Univ. of Wales college of Cardiff, Cardiff, UK, 2-5 July 1991 Ed. by M.C.R. Davies:

Land transformation in agriculture Ed. by M. G. Wolman a. F. G. A. Fournier:

Methoden der Bodenbiologie Hrsg. von Wolfram Dunger u. Hans Joachim Fiedler ; Erarbeitet von einem Autorenkollektiv:

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