Caracterización de los ácidos húmicos en suelos de la zona cafetera de Caldas.

H Gonzalez Osorio, R D Zapata Hernandez,S Sadeghian Khalajabadi, E F Neto,Heshani De Silva, R De Melo Costa Pinto, Julio Cesar Viglioni Penna,P Machado, R Costa Argolo, Quintino Reis Araujo, G A Sodre,Ivo Jucksch, A Moreau, L P Santos Filho, T L Brown,H E Lemay,B E Bursten, L Portillo Martinez, A L Vigueras Guzman, Jonathan L Mcmurry,Rodolfo A Diaz, J L Torella,O J Santanatoglia, Frank J Brescia, John Arents, H Meislich, Alexander J Turk,Milagros Balbin, Enrique Ortega,W D Ollis,I L Finar, D C Torgeson, Anthony H Rose,J Harrison, Eds,T W Goodwin, M F Arcoverde, D Kass, R G Muschler,Magdy A Ibrahim, Eliana Cuellar Fernandes, F Acuna Arias, J G Calzada Alan, F Chaves Saenz, M A Constela Umana, M Espinoza Flores, A J Mata Jimenez, L Munoz Castro,Donald L Sparks, David L Suarez, R Merino Hinrichsen, S Fontana L, Jorge Chaves, M Del R Garcia Mateos, M A Hein, Z Mansk, J B Matiello,Elner B Rathbone, G D Patel, R W Butters,David J Cookson,Jennifer L Robinson,George E Davis, V W Garwood, D L Barfuss, S A Husaini, M Blanc,Rolando M Viani,Roland Prewo, Armin Guggisberg, A Lorenzi Riatsch, Thomas Baumann, M Wettstein Battig, H K Cammenga,Hermann Bothe, I Steppuhn, M Steppuhn,Andreas Kappeler, H Greutert, G A Pictet, A Rodriguez S, R A Garcia, Daniel J Arriola, Arriola M Del C Porres C, C Rodas, Javier Calzada, K O Abraham, M L Shankaranarayana, P M Frischknecht, J Ulmerdufek, Jorge Fernando Pereira, A S Crafts, Shoki Yamaguchi, I B Figueiredo, H V Amorim, Anna R Cruz,Ricardo Marques Dias, L E Gutierrez, A A Teixeira, M L S Mello, G D De Oliveira, M J Clifford, A Escardino, Mariano Monzo,Janira Martins Costa, A Aucejo, J G Cortez, M A Guercio, E Malavolta, N H Gopal, P K Ramaiah

mag（2000）

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