000 00423nam a2200121Ia 4500
008 140113s9999 xx 000 0 und d
082 _a595.7:632.7 N5
100 _a"Knipling, E.F."
245 _aPrinciples of Insect parasitism analysed from new perspctives practical implications for regulating insect population by biological means
260 _a1995
_bUnited States Dept. Of Agric.
_cUSA
300 _a335
942 _cBK
999 _c61233
_d61233