1. Zig Zag chute;Downs,1978
2. An automatic boom control for potato harvesters;Halderson;ASAE Trans.,1981
3. New concepts in potato harvesting;Johnson;Am. Potato J.,1975
4. Growers, Handlers Urged: don't bruise the crop — everyone has an interest in product life;Lindstrom,1993
5. A potato harvester delivery conveyor with automatic discharge height control;McRae,1973