000 00333nam a2200145Ia 4500
020 _a9780582004139
082 _b866
_a910
100 _a"Briggs David J."
245 0 _aAgriculture & Environment
260 _bLongman
_aUK
_c1989
300 _a442
944 _cBK
999 _c393597
_d393597