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1by Esguerra, M., Conferencia Internacional de Mecanizacion Agraria spa 10-11 Apr 198910-13 Apr 1989 21 Zaragoza (Spain), 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