Agricultural environments, characterization classification and mapping, methods
Young, A.
Agricultural environments, characterization classification and mapping, methods - Nairobi 1988 - 43-63 p. - No. 40; International Council .
63:551.5
Agricultural environments, characterization classification and mapping, methods - Nairobi 1988 - 43-63 p. - No. 40; International Council .
63:551.5