Tips for planning formal farm surveys in developing countries
Horton, Douglas
Tips for planning formal farm surveys in developing countries Douglas Horton - Lima International Potato Center 1985 - 17p.; 28cm.
635.217 133 H789T
Tips for planning formal farm surveys in developing countries Douglas Horton - Lima International Potato Center 1985 - 17p.; 28cm.
635.217 133 H789T