Herd-testing, season 1919-20
Johsntone, F.H., Ramskill, E.F.
Herd-testing, season 1919-20 - Tasmania 1920 - 1-9 p. - Tasmania Department of Agriculture. Bulletin No. 99 .
Herd-testing, season 1919-20 - Tasmania 1920 - 1-9 p. - Tasmania Department of Agriculture. Bulletin No. 99 .