by McDonald, A. H. E.;
Year: 1982., Callno: 685.1 HAR
Book
by Organisation for Economic Co-operation and Development.;
Callno: 05:631.372.3
Serial
by Intermediate Technology Development Group.; Boyd, J. E.; Ayok, E. A.;
Year: 1977., Callno: Q631.3(669) BOY
Book
by Standards Association of Australia.;
Callno: 05:389.6(94)
Journal
by Smith, G. D.; Awadhwal, N. K.; International Crops Research Institute for the Semi-Arid Tropics.;
Year: 1989., Callno: 631.3.071 AWA [P]
Book
by International Conference on Robotics and Intelligent Machines in Agriculture (1st : 1983 : Tampa, Florida); American Society of Agricultural Engineers.;
Year: 1984, Callno: 631.3.076 INT
Conference proceedings