| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Fodder and Pasture Plants: -1913 | 978-1-112-24245-8 (1-112-24245-7) | 2009 |
| Selection of Seed Grains, Crop Growing: Evidence of Mr. G. H. Clark, Seed Commissioner ... Before the Select Standing Committee on Agriculture and Colonization, C1905. | 978-1-112-33250-0 (1-112-33250-2) | 2009 |
G. C. · G. Clark · G. H. Clark · George-C · George Clark · H. C. · H. Clark · Harold C. · Harold Clark