TY  - GEN
AU  - Lewis, Dyfed
AU  - Swan, Henry
TI  - Feed energy sources for livestock
T2  - Studies in the agricultural and food science
SN  - 0-408-70713-5
U1  - 636.085 5 SWA 
CY  - London, Butterworths
KW  - Animal feeds  congresses / animal nutrition congresses
ER  -