Dr. Adha Fatmah Siregar
http://balittanah.litbang.pertanian.go.id/ind/index.php/profil-peneliti-mainmenu-92/peneliti/72-kimia-dan-kesuburan-tanah/1163-adha
Indonesian Soil Research Institute, Bogor, Indonesia
| We would like to thank the following organizations for their support : Faculty of Agriculture, Universitas Sebelas Maret  |
