00302nam a2200121 a 450000500170000008200150001710000260003224500240005825000120008226000440009430000300013863000120016820251203091418.0  a574.5bKOR  aKormondy, Edward Jd_  aConcepts of ecology  a3rd ed.  aNew DelhibPrentice Hall of Indiac1989  axviii, 298 p.c22 cm.bPB  aEcology