00475nam a2200157Ia 4500001001000000003000500010008004100015010001100056040000900067100001700076245006000093260006300153300001000216440004500226650004600271Para_3776CHAP220125s1947    xx            000 0 und d  a204662  cCHAP  aBaerg, W.  J  aThe biology of the maple leaf scale  /c by W. J. Baerg  aFayateville, Arkansas  :b Agricultural Experiment Station  a14 p.  aArkansas. Agric. Exp. Sta. Bulletin; 470  aPulvinaria innumerabilis  Maple x Plagas