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JOURNAL OF CHROMATOGRAPHY A
JOURNAL OF CHROMATOGRAPHY A
Daulat Muara Toba Siregar
Direktorat Paten, Dirjen Hak Kekayaan Intelektual, Departemen Hukum dan Hak Asasi Manusia
The American Chemical Society
The American Chemical Society
The American Institute of Physics
American Association of Petroleum Geologists
American Institute Of Chemical Engineers
Blackwell Scientific Publication
American Chemical Society
Peterson Publishing CO LTD
Society of Economic Paleontologists and Mineralogists
The Society of Petroleum Engineers