000 00384 am a2200121 a 4500
100 1 _aPschorn-Walcher, H.
245 1 _aComparison of some dreyfusia (= adelges) infestations in eurasia and North America
260 _aSwitzerland
_c1964
300 _a1-154 p.
942 _2udc
_cB
440 _aCommonwealth institute of biological control. Technical Bulletin No. 4
901 _aS51885
999 _c110445
_d110445