300 dpi: (d529-1.jpg)
640 pixels wide: (d529-1.jpg)
![]() Image Number D529-1 |
Chemist James Reeves analyzes manure for nitrogen in the field using a prototype near-infrared filter spectrometer.
Photo by Stephen Ausmus.
300 dpi: (d529-1.jpg)
640 pixels wide: (d529-1.jpg)
![]() Image Number D529-1 |
Chemist James Reeves analyzes manure for nitrogen in the field using a prototype near-infrared filter spectrometer.
Photo by Stephen Ausmus.