Bulletins of the experiment stations, 1925 and 1926
Pennington, Catherine E.
Bulletins of the experiment stations, 1925 and 1926 - Washington 1927 - 1-62 p. - Bulletins, Experiment United State of Department of Agriculture. Bulletin No. 1199 .
Bulletins of the experiment stations, 1925 and 1926 - Washington 1927 - 1-62 p. - Bulletins, Experiment United State of Department of Agriculture. Bulletin No. 1199 .