BOOKQUE

Insects and Related Pests of House Plants: How to Control Them
George Victor Johnson , Floyd Franklin Smith
· 1963
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Insects and Related Pests of House Plants - How to Control Them. (Rev.1966).
United States. Entomology Research Division , Floyd F. Smith , George Victor Johnson
· 1960
No image available
Insects and Related Pests of House Plants - How to Control Them. (Rev.1964).
United States. Entomology Research Division , Floyd F. Smith , George Victor Johnson
· 1960
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Experiments on the Control of Chrysobothris Femorata in Oklahoma
George Victor Johnson
· 1938
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Insects and Related Pests of House Plants: How to Control Them
George Victor Johnson
· 1970
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Insects and Related Pests of House Plants - How to Control Them. (Rev.1970).
George Victor Johnson , United States. Entomology Research Division , Floyd F. Smith
· 1960
No image available
Insects and Related Pests of House Plants - How to Control Them. (Rev.1963).
United States. Agricultural Research Service , Floyd F. Smith , George Victor Johnson
· 1960
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A Small Field Duster
George Victor Johnson , United States. Bureau of Entomology and Plant Quarantine
· 1948
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A Concentrate Sprayer for Experimental Use
George Victor Johnson , United States. Bureau of Entomology and Plant Quarantine
· 1948
No image available
Insects and Related Pests of House Plants - How to Control Them. (Rev.1972).
United States. Entomology Research Division , Floyd F. Smith , George Victor Johnson
· 1960