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BULETIN PUSAT PENELITIAN PERKEBUNAN MARIHAT. VOL. 11 (1), FEBRUARI 1991
LUBIS, RIDWAN A
Primary Author
mixed material
02161427
PEMATANGSIANTAR
PUSAT PENELITIAN PERKEBUNAN MARIHAT
1991
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BULETIN PUSAT PENELITIAN MARIHAT. VOL. 10 (1), APRIL 1990.
LUBIS, RIDWAN A
Primary Author
mixed material
02161427
PEMATANGSIANTAR - SUMUT
PUSAT PENELITAN MARIHAT
1990
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BULETIN PUSAT PENELITIAN PERKEBUNAN MARIHAT VOL. 12 (2), JUNI 1992
LUBIS, RIDWAN A
Primary Author
mixed material
02161427
PEMATANGSIANTAR - SUMUT
PUSAT PENELITIAN PERKEBUNAN MARIHAT- BANDAR KUALA
1992
BULETIN PUSAT PENELITIAN PERKEBUNAN KELAPA SAWIT VOL 11 (3), OKTOBER 1991
LUBIS, RIDWAN A
Primary Author
mixed material
02161427
PEMATANG SIANTAR-SUMUT
PUSAT PENELITIAN PERKEBUNAN MARIHAT
1991
BULLETIN PUSAT PENELITIAN PERKEBUNAN MARIHAT VOLUME 11 NO. 1. PEBRUARI 1991
LUBIS, RIDWAN A
Primary Author
mixed material
02161427
PEMATANG SIANTAR - SUMATERA UT
LUBIS, RIDWAN A
1991
BULETIN PUSAT PENELITIAN PERKEBUNAN MARIHAT. VOL. 10 (2), AGUSTUS 1990
LUBIS, RIDWAN A
Primary Author
mixed material
02161427
PEMATANG SIANTAR-SUMUT
PUSAT PENELITIAN PERKEBUNAN MARIHAT
1990
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BULETIN PUSAT PENELITIAN PERKEBUNAN MARIHAT VOL. 10 (3), DESEMBER 1990.
LUBIS, RIDWAN A
Primary Author
mixed material
02161427
PEMATANG SIANTAR-SUMUT
PUSAT PENELITIAN PERKEBUNAN MARIHAT
1990
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BULETIN. PUSAT PENELITIAN PERKEBUNAN MARIHAT. VOL. 13 (1), PEBRUARI 1993
SUWANDI
Primary Author
LUBIS, RIDWAN A
Primary Author
mixed material
02161427
MARIHAT ULU, P.SIANTAR
PUSAT PENELITIAN PERKEBUNAN MARIHAT-BANDAR KUALA
1993
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BULETIN KELAPA MANGGAR PUSLITBUN MARIHAT-BANDAR KUALA. VOL. 5 (1), MARET 1992
SUWANDI
Primary Author
LUBIS, RIDWAN A
Primary Author
mixed material
02158396
GALANG, SUMATERA UTARA
PUSAT PENELITIAN PERKEBUNAN MARIHAT BANDAR KUALA
1992
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LAPORAN TAHUNAN PUSLITBUN 1991 BANDAR KUALA
LUBIS, RIDWAN A
Primary Author
mixed material
MARIHAT - BANDAR KUALA
PUSAT PENELITIAN PERKEBUNAN MARIHAT - BANDAR KUALA
1991
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