000 00313nam a22001337a 4500
020 _a9780003222463
050 _aMEDQL645
_b6.A47
100 _aWilliams Gareth
245 _aTechniques and field work in ecology
260 _a1987
_bCollins educational
_c2001
300 _a153p
_bindex
700 _a
942 _cBK
999 _c4215
_d4215