Horton, Douglas E. Social scientists in agricultural research; lassons from the Mantero Valley Project, PerĂș - Ottawa : International Development Research Center, 1984 - 67 p. : ilus. - IDRC ; 219e . - IDRC ; 219e . LCCN: 16502 Subjects--Topical Terms: Agricultura--Investigacion--Peru.SociologĂa rural.