Hussain, 2009. PhD Thesis, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, 379 p.

Hussain, A., 2009. Study of seasonal biomass productivity and nutritional quality of major forage species in subtropical sub humid rangelands of district Chakwal. PhD Thesis, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, 379 p.