Western Australia, Tractor, Tractor types, Tractor usage
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THE most common type of tractor in this country is the medium-sized four-wheeled general purpose machine, which may have either pneumatic-tyred or all-steel wheels.
"The farm tractor—part.1—tractor types, and some hints on using them,"
Journal of the Department of Agriculture, Western Australia, Series 3: Vol. 3:
3, Article 4.
Available at: https://library.dpird.wa.gov.au/journal_agriculture3/vol3/iss3/4