Men L t, Van B H, Chinh M t and Preston T R 1997:
Effect of dietary protein level and duckweed (Lemna spp) on reproductive performance of pigs fed a diet of ensiled cassava root or cassava
root meal.
Livestock Research for Rural Development. Volume 9, Article #1.
Retrieved
, from http://www.lrrd.org/lrrd9/1/lemen911.htm