00277nam a2200109Ia 450000500170000000800410001708200120005810000180007024500330008826000380012130000080015920260224040812.0260224s9999||||xx |||||||||||||| ||und||  a581 BEL  aBell, J.N.B.  0aAir pollution and plant life  aNew York: John Wiley & Sonsc2002  a465