01046nas 2200385 c 450 99620633850331620181220151931.0(CKB)1000000000533410(OCoLC)643810484(DE-101)985385324(DE-599)ZDB2383397-X(EXLCZ)99100000000053341020070817a20079999 |y |engur|||||||||||txtrdacontentcrdamediacrrdacarrierAfrican journal of environmental science and technologyAJEST[S.l.]Academic Journals2007-Online-RessourceGesehen am 26.08.131996-0786 AJESTZeitschriftgnd-content500690AFRIKADE-30fid0007DE-1010030JOURNAL996206338503316African journal of environmental science and technology2143941UNISA