00538nam a22002057a 450000500170000000600040001700700040002100800040002502000150002904000090004405000210005310000190007424500810009325000120017426000570018630000240024350000190026765000290028670000170031520170725160704.0000000000  a0751403806  aUOEL  aTD193b.A45 1994  aAlloway, B. J.  aChemical principles of environmental pollution /cB. J. Alloway, D. C. Ayres  a2nd ed.  aLondon :bBlackie Academic and Professional,cc1997.  avii, 395 p. :bill.  aincludes index  aEnvironmental Technology  aAyres, D. C.