by George T. Ferrell
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Ten-year risk-rating systems for Califor...
Risk-rating systems for mature red fir a...
Growth classification systems for red fi...
Gouty pitch midge damage to ponderosa pi...
Black pineleaf scale
Differential susceptibility of white fir...
Jude the Obscure
The history of the great plague in Londo...
The blue bird
Wood anatomy of the neotropical Sapotace...
[Preservation of forests.]
Pesticides