Yazar
crocheron
20 cilt bulundu.
Bertram Hanford Crocheron, Claude M. Vestal, George Hart Hart, H. S. Baird, John Sedgwick Burd, Ralph Eliot Smith, Stanley Sawyer Rogers, Woodbridge Metcalf, George Putnam Gray, Edward Oliver Essig · Yayınevi bilinmiyor
552 sayfa · 1918
Agricultural extension work
Bertram Hanford Crocheron, Clarence Melvin Haring, Fritz Wilhelm Woll, John Irwin Thompson, John William Gregg, Stanley Sawyer Rogers, Wells Aleck Hutchins, William Brodbeck Herms, William Vere Cruess, Christopher John Williams, Jerry Raymond Beach, Stanley Barron Freeborn · Yayınevi bilinmiyor
506 sayfa · 1917
Bernard Alfred Etcheverry, Bertram Hanford Crocheron, Charles William Woodworth, Frederic Theodore Bioletti, Thomas Forsyth Hunt, W. V. Shear, William Granville Hummel · Yayınevi bilinmiyor
548 sayfa · 1915
Agricultural education
Arthur Howard Hendrickson, Bertram Hanford Crocheron, Fritz Wilhelm Woll, George Putnam Gray, Jerry Raymond Beach, John Washington Gilmore, Richard Laban Adams, Stanley Sawyer Rogers, Thomas Forsyth Hunt, Walter Eugene Packard · Yayınevi bilinmiyor
626 sayfa · 1917
Agricultural extension work
National Society for the Study of Education, Bertram Hanford Crocheron · Yayınevi bilinmiyor
78 sayfa · 1911
Community centers