International bibliography on cropping systems 1979
Ramos, Mila Medina
International bibliography on cropping systems 1979 - Philippines: Library and Documentation Center, 1981 - xii, 336p.
Bibliographies
Cropping
R 016:631/635 / M1
International bibliography on cropping systems 1979 - Philippines: Library and Documentation Center, 1981 - xii, 336p.
Bibliographies
Cropping
R 016:631/635 / M1