TY  - JOUR
AU  - Nobakht, Ali
AU  - Mehmannavaz, yosef
AU  - Mahdavy, saman
TI  - Evaluation of the effects of different nutrient levels on performance of laying hens
JO  - Agroecology Journal
VL  - 5
IS  - 2
SP  - 135
EP  - 142
PY  - 2009
DO  - 
ER  -