TY  - GEN
AU  - Lewis, Dyfed
AU  - Swan, Henry
TI  - Feed energy sources for livestock
T2  - Studies in the agricultural and food sciences
SN  - 0408707135
U1  - 636.  085  5 SWA 
CY  - London, Butterworths
KW  - Animals feeds-congresses/animal nutrition-congresses
ER  -