Showing results under subject: 'forestry'

Color it green with trees : a calendar of activities for home arborists

Author: United States. Agricultural Research Service.
Publisher:Washington DC,US Dept of Agriculture, Agricultural Research Service 1972
Abstract: no abstract

A pathological survey of the Para rubber tree (Hevea brasiliensis) in the Amazon Valley

Author: Weir, James R. (James Robert),
Publisher:Washington DC,US Dept of Agriculture 1926
Abstract: no abstract

Insect enemies of western forests

Author: Keen, F. P. (Frederick Paul),
Publisher:Washington DC,US Dept of Agriculture 1938
Abstract: no abstract

Nursery practice on the national forests

Author: Tillotson, C. R.
Publisher:Washington DC,US Dept of Agriculture 1917
Abstract: no abstract

Development program for the national forests

Author: United States. Forest Service.
Publisher:Washington DC,US Dept of Agriculture, Forest Service 1961
Abstract: no abstract

Some reasons for spraying to control insect and mite enemies of citrus trees in Florida

Author: Yothers, W. W.
Publisher:Washington DC,US Dept of Agriculture 1918
Abstract: no abstract

Atlas of United States trees volume 4 Minor eastern hardwoods

Author: Little, Elbert L. (Elbert Luther),
Publisher:Washington DC,US Dept of Agriculture, Forest Service 1977
Abstract: no abstract

Our forests : what they are and what they mean to us

Author: Heisley, Marie Foote,
Publisher:Washington DC,US Govt Print Off 1940
Abstract: no abstract

The national forests of California

Author: Ayres, Robert W. (Robert William),
Publisher:Washington DC,US GPO 1927
Abstract: no abstract

Relative resistance of tree seedlings to excessive heat

Author: Bates, Carlos G. (Carlos Glazier), - Roeser, Jacob.
Publisher:Washington DC,US Dept of Agriculture 1924
Abstract: no abstract
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