000			003410000a22001330004500
008			140223b1986 xxu||||| |||| 00| 0 eng d
041			_aENG
080			_aH23472 M6.3
082			_aH23472 M6.3
245			_aAnalysis of processing technology for mangnese nodules
260			_c1986
650			_aPetrology
906			_aUnited Nations
999			_c156564 _d156564