Herd-testing, season 1920-21.
Johnstone, F.H., Ramskill, E.F.
Herd-testing, season 1920-21. - Tasmania 1921 - 1-8 p. - Tasmania Department of Agriculture. Bulletin No. 102 .
Herd-testing, season 1920-21. - Tasmania 1921 - 1-8 p. - Tasmania Department of Agriculture. Bulletin No. 102 .