00358nam a2200121Ia 450000500170000000800410001702000150005808200180007310000250009124500450011626000650016130000100022620260205055829.0260111s9999||||xx |||||||||||||| ||und||  a8174560548  a577.03  T739E  aTrivedi,Priya Ranjan 0aEncyclopaedia of ecology and environment  aNew DelhibIndian Institute of Ecology and environmentc1999  a313p.