Sheep dipping - trials with derris, D.D.T. and gammexane
Coop, I.E.
Sheep dipping - trials with derris, D.D.T. and gammexane - Christchurch 1948 - 1-4 p. - Sheep Canterbury Chamber of Commerce. Agricultural Bulletin No. 222 .
Sheep dipping - trials with derris, D.D.T. and gammexane - Christchurch 1948 - 1-4 p. - Sheep Canterbury Chamber of Commerce. Agricultural Bulletin No. 222 .