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5by Rivera, J.A., Riano, C.H., Monsalve, P.A., Restrepo, L.F., Aranzazu, D.A., Giraldo, G.E., Alzate, G.J., Jaramillo, C.D., De Leon, M., Hernandez, E.Texto bibliotecaUBA
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6by Ortiz-Canavate, J. (Departamento de Ingenieria Rural, Madrid (Spain)), Conferencia Internacional de Mecanizacion Agraria spa 10-11 Apr 198910-13 Apr 1989 21 Zaragoza (Spain), Hernandez, E., International Conference on Agricultural Mechanization eng 10-11 Apr 198910-13 Apr 1989 21 Zaragoza (Spain), Seminario de FAO-CNRE: Tecnologias de Produccion de Biogas spa 10-11 Apr 198910-13 Apr 1989 21 Zaragoza (Spain), Workshop of the FAO-CNRE: Biogas Production Technologies eng 10-11 Apr 198910-13 Apr 1989 21 Zaragoza (Spain)
Published 1989Texto bibliotecaFAO IT