Published 1992

Published 1992

Published 1992

Published 1992

Published in Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) (1992)

Published in Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) (1992)

Published in Philippine Agricultural Scientist, The (Formerly the Philippine Agriculturist) (1992)

Published 1992

Published 1991

Published 1991