Artikel Jurnal
Sie, Kwat Soen
Centre for Agricultural Publications and Documentation, 1968
Buku Teks
Sie, Kwat-soen
Centre for Agricultural Publishing and Documentation, 1968
Buku Teks
Sie, Kwat Soen
Centre for Agricultural Publishing and Documentation, 1968
Buku Teks
Agency for Agricultural Research and Development, 1992
Buku Teks