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Dr Jeffrey Herrick, Soil Scientist, USDA Agricultural Research Service (World Agroforestry) View | |
Dr Jeffrey Herrick, Soil Scientist, USDA Agricultural Research Service (ICRAF2013) View | |
100 Voices on the International Year of Soils: Jeffrey E Herrick, US Dept. of Agriculture, Mexico (ICRISAT) View | |
Soil health trainings 1 introduction to the indicators (The Jornada) View | |
IRP messages on World Day to Combat Desertification and Drought (International Resource Panel) View | |
Ecological Site Identification (The Jornada) View | |
20 NAEC June 6, 2017 Caird Rexroad III, USDA, Agriculture Research Service (Western Regional Aquaculture Center) View | |
30 NAEC June 8, 2017 David Straus, USDA, Agriculture Research Service (Western Regional Aquaculture Center) View | |
Soil health trainings 2 set up u0026 soil cover (The Jornada) View | |
Employment Opportunities for Weed Scientists in the USDA-ARS - John Teasdale (Wssa weeds) View |