Ralph W. Hansen

1) Large tractor operation: fallacies and facts

Author
Downs, H. Willard
Series
Farm and ranch series. Equipment volume no. 5.005
Publisher
Colorado State University Extension Service
Pub. Date
2005.
Language
English

2) Estimating farming fuel requirements

Author
Downs, H. Willard
Series
Farm and ranch series. Equipment volume no. 5.006
Publisher
Colorado State University Extension Service
Pub. Date
1998.
Language
English

3) Selecting energy-efficient tractors

Author
Downs, H. Willard
Series
Farm and ranch series. Equipment volume no. 5.007
Publisher
Colorado State University Extension Service
Pub. Date
2005.
Language
English