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020 _a0824777514
_c
_150
040 _aMAIN
041 _aEnglish
082 _a660
_bELK
100 _aElkan, Gerald H.
245 0 _aSymbiotic nitrogen fixation technology
_b: Dek blyDekl fixation yixfixatio n,y fixation fit fc
260 _aNew York
_b; Marcel Dekker
_c, 1987
300 _aix,440p.
650 _aChemical Technology
650 _aSymbiotic Nitrogen Fixation
942 _cBK
999 _c120538
_d120538