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12. The culture and diseases of the onion
13. Manual of vegetable-garden diseases
14. An outline of forest pathology
15. Forest insects: a text-book for the use of students in forest schools, colleges, and universities, and for forest workers
16. Insects of citrus and other subtropical fruits
17. Forest pathology
18. Outline of diseases of cereal and forage crop plants of the northern part of the United States
19. Diseases of fruits and hops
20. Important tree pests of the northeast: a revision of Tree pest leaflets nos. 1-50
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