00563cam a2200169 a 450000500170000000800410001703500150005810000240007324500900009724600620018726000570024930000100030650000160031665000140033265000280034665000190037420260817162051.0110225s1997    th      r     000|0 eng d  a.b116798270 aChongrak Polprasert10aAIT professorial lecture on natural systems for pollution control and waste recycling30aNatural systems for pollution control and waste recycling  aPathum Thani :bAsian Institute of Technology,c1997  a21 p.  aCover title 0aPollution 0aRecycling (Waste, etc.) 0aBioremediation