The biology of the maple leaf scale /
Baerg, W. J
The biology of the maple leaf scale / by W. J. Baerg - Fayateville, Arkansas : Agricultural Experiment Station - 14 p. - Arkansas. Agric. Exp. Sta. Bulletin; 470 .
204662
Pulvinaria innumerabilis Maple -- Plagas
The biology of the maple leaf scale / by W. J. Baerg - Fayateville, Arkansas : Agricultural Experiment Station - 14 p. - Arkansas. Agric. Exp. Sta. Bulletin; 470 .
204662
Pulvinaria innumerabilis Maple -- Plagas