Coetzer, Jacobus A.W.; Bath, Gareth F.; Kellerman, T. Stephanus; Sadler, W.; Bigalke, R.D.
(Published by The Government Printer, Pretoria, 1983)
The subject of this study was the pathological and scanning electron microscopical changes in the biliary systems of sheep suffering from facial eczema or geeldikkop (Tribulosis ovis), or made photosensitive by ligation ...