The oyster- shell scale and the scurfy scale /
Quaintance, A. L.
The oyster- shell scale and the scurfy scale / by A. L. Quaintance and E. R. Sasscer - Washington : Department of Agriculture - 16 p. - Bulletin; 723 .
Encuadernado con: Studies of life histories of froghoppers of Maine / Herbert Osborn.
204993
Arboles frutales -- plagas
Insectos parásitos y predatores
Lepidosaphes ulmi
PA-C 595.7 B85
The oyster- shell scale and the scurfy scale / by A. L. Quaintance and E. R. Sasscer - Washington : Department of Agriculture - 16 p. - Bulletin; 723 .
Encuadernado con: Studies of life histories of froghoppers of Maine / Herbert Osborn.
204993
Arboles frutales -- plagas
Insectos parásitos y predatores
Lepidosaphes ulmi
PA-C 595.7 B85