New Zealand Journal of Agriculture
15 February 1950
New Zealand Journal of Agriculture
15 April 1950
New Zealand Journal of Agriculture
16 October 1950
New Zealand Journal of Agriculture
16 October 1950
New Zealand Journal of Agriculture
15 November 1950
New Zealand Journal of Agriculture
15 November 1950
New Zealand Journal of Agriculture
15 November 1950
New Zealand Journal of Agriculture
15 July 1950
New Zealand Journal of Agriculture
15 March 1950