Muhammad Ashraf; Safdar Ali; Ijaz-ut-Hassa(Faisalabad: Institute of Soil & Environmental Sciences University of Agriculture, Faisalabad. Pakistan, 2002-01-08)
Aumbrin Tabasam; Safdar Ali; Rifat Hayat'(Faisalabad: Institute of Soil & Environmental Sciences University of Agriculture, Faisalabad. Pakistan, 2002-02-09)
Shahzada Sohail Ijaz; Safdar Ali; Rifat Hayat'(Faisalabad: Institute of Soil & Environmental Sciences University of Agriculture, Faisalabad. Pakistan, 2002-09-09)