00523nam a2200181 a 450000500170000002000150001708200170003210000160004924500620006526000330012730000200016069000260018070000190020696400190022599700180024499900170026295200620027920251203092013.0  a0582218748  a628,bD, enn  aEnnos, A.R.  aProblem solving in environmental biology, A.R. Ennos, eng  aLoNew Delhion, Longmanc1995  avii,175p.c28cm  aEnvironmental biology  aBailey, S.E.R.  bEngcdefg_  a82632 LIBSC C  c60489d60489  00104070aPUbPUd1998-07-16l0o628, D, ennp82632yBK