Observations on an introduced bud scale, Physokermes hemicryphus (Homoptera: Coccidae), infesting Norway spruce in Idaho

Author: Furniss Malcolm M  

Publisher: NRC Research Press

ISSN: 1208-6037

Source: Canadian Journal of Forest Research, Vol.34, Iss.6, 2004-06, pp. : 1348-1352

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