International Symposium "Humus et Planta" < 1991, Prague, Czech Republic>. (1992). Humus, its structure and role in agriculture and environment: Proceedings of the 10th Symposium Humus et Planta, held in Prague, in August 19-23, 1991. Elsevier.
Chicago-Zitierstil (17. Ausg.)International Symposium "Humus et Planta" < 1991, Prague, Czech Republic>. Humus, Its Structure and Role in Agriculture and Environment: Proceedings of the 10th Symposium Humus Et Planta, Held in Prague, in August 19-23, 1991. Amsterdam: Elsevier, 1992.
MLA-Zitierstil (9. Ausg.)International Symposium "Humus et Planta" < 1991, Prague, Czech Republic>. Humus, Its Structure and Role in Agriculture and Environment: Proceedings of the 10th Symposium Humus Et Planta, Held in Prague, in August 19-23, 1991. Elsevier, 1992.