& Taha J. EFFECT OF SUPPLEMENATION OF PROBIOTIC AND CITRIC ACID TO LAYING HENS DIET ON EGGS QUALITY TRAITS. IRAQI JOURNAL OF AGRICULTURAL SCIENCES [Internet]. 19Apr.2017 [cited 30Nov.2019];48(2). Available from: http://jcoagri.uobaghdad.edu.iq/index.php/intro/article/view/426