by W. P. Stephen
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Stone fruit pollination
Propagation of the leaf-cutter bee for a...
Pear pollination studies in Oregon
Nesting media for the propagation of lea...
Bumble bees of Western America (Hymenopt...
Chalk brood disease in the leafcutting b...
The ABC and XYZ of Bee Culture
The A B C of bee culture
Bramble-bees and others
Miscellaneous
Manual of the apiary
A nevv orchard and garden, or, The best ...