00588cas|a2200157 a 450000500170000000800410001703500150005805000230007324500800009626000590017630000100023549000490024565000350029465000110032981000900034020260817171445.0050921s2005    ke uu|m rtt   0|  a1eng d  a.b10114889 4aHC79 E5bU462 no.200aBiogas fertilizer system :btechnical report on a training seminar in China  aNairobi :bUnited Nations Environment Programme,c1981  a86 p.1 aUNEP reports and proceedings series ;vno. 2 0aFertilizers and manureszChina 0aBiogas2 aUnited Nations.bEnvironment Programme.tUNEP reports and proceedings series ;vno. 2