The preparation of bees for out-door wintering /
Phillips, E.
The preparation of bees for out-door wintering / by E. F. Phillips and Georges S. Demuth - Washington : Department of Agriculture - 24 p. - EUA. Dept. of Agriculture Farmers Bull.; 1012 .
205981
Abejas
Frío -- efecto en insectos
The preparation of bees for out-door wintering / by E. F. Phillips and Georges S. Demuth - Washington : Department of Agriculture - 24 p. - EUA. Dept. of Agriculture Farmers Bull.; 1012 .
205981
Abejas
Frío -- efecto en insectos