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Pengaruh pupuk kandang terhadap pertumbuhan tanaman cokelat (Theobroma cacao L.) dan beberapa sifat kimia tanah podsolik
Poeloengan, Zulkarnain
Additional Author
mixed material
Bogor
IPB
1983
Cvr_Pengaruh_pupuk_kandang....JPG
Contribution to the development of a land evaluation system for oil palm
Poeloengan, Zulkarnain
Additional Author
mixed material
Ghent
Faculteit van de Wetenschappen
1987
Cvr_Contribution.JPG
Oil palm growth on high Ni soils, In :
1993 Porim International Palm Oil Congress, Hotel Istana, Kuala Lumpur, 20-25 Sept.'1993
Poeloengan, Zulkarnain
Additional Author
mixed material
Selangor
PORIM
1993