by Pinstrup-Andersen, Per, de Londoño, Norha Ruiz, Hoover, Edward
Published in American journal of agricultural economics (01.05.1976)

by Janssen, Willem, de Londoño, Norha Ruiz
Published in Agricultural economics (1994)

by Ruiz de Londono Norha, Janssen Willem G, Gaona Jenny S, Castano Zapata Jairo
Year of Publication 1991

by Ruiz de Londono Norha, Garcia James Arbey, Pachico Douglas H, Agencia Suiza para el Desarrollo y la Cooperacion
Year of Publication 2000

by Ruiz de Londono, Norha
Year of Publication 1997

by Ruiz de Londono, Norha
Year of Publication 1997

by Janssen, Willem, Londono, Norha Ruiz de
Published in Agricultural Economics: The Journal of the International Association of Agricultural Economists (01.01.1994)

by Pachico, Douglas H, Ruiz de Londono, Norha
Year of Publication 1998

by Pinstrup-Andersen, Per, Ruiz, De Londono Norha
Published in American journal of agricultural economics (01.05.1976)

by Janssen, Willem, Londoño, Norha Ruiz
Published in Agricultural economics (01.01.1994)

by Ruiz de Londono, Norha, Janssen, Willem G
Published in Documento de trabjo (Colombia) (1990)

by Pinstrup-Andersen, Per; de Londoño, Norha Ruiz; Hoover, Edward
Year of Publication 23.03.2012

by Ruiz de Londono, Norha, Sanders, John H, Pachico, Douglas H, Herrera Duran, Oscar
Published in Documento de trabajo (Colombia) (1985)

by Pinstrup-Andersen, Per, de Londoño, Norha Ruiz, Hoover, Edward
Published in American journal of agricultural economics (01.05.1976)

by Ruiz de Londoño, Norha, Pachico, Douglas H
Year of Publication 1997

by Sanint, Luis Roberto, Rivas Rios, Libardo, Gottret, María Verónica, Raymond, M, Ospina, Bernardo, Pachico, Douglas H, Cardoso, Carlos Estevao Leite, Ruiz de Londoño, Norha, Mukandala, Leonard, Mafuru, J.M, David, Soniia
Year of Publication 1999

by Ruiz de Londoño, Norha, García, James Arbey, Pachico, Douglas H, Agencia Suiza para el Desarrollo y la Cooperación
Year of Publication 2000