The Design of Feeler Wheel Toppers for Sugar Beet: I. Topper DynamicsO'Dogherty · Journal of Agricultural Engineering Research1986PDF1.9 MB
The Design of Feeler Wheel Toppers for Sugar Beet: 3. Topper GeometryO'Dogherty · Journal of Agricultural Engineering Research1986PDF730 KB
Design and Field Testing of an Experimental Onion TopperCarson et al. · Transactions of the ASAE1969PDF1.1 MB