Muhammad Aslam; R. H. Qureshi; R. Mahmood; S. Nawaz; Javaid Akhtar(Faisalabad: Institute of Soil & Environmental Sciences University of Agriculture, Faisalabad. Pakistan, 2001-11-12)
M. Aslam; l.H. Mahmood; R.H. Qureshi; S. Nawaz; J. Akktar(Faisalabad: Institute of Soil & Environmental Sciences University of Agriculture, Faisalabad. Pakistan, 2002-02-07)
M. Aslam; M. Nasim; R.H. Qureshi; S. Nawaz; J- Akhtar; Z. Ahmad(Faisalabad: Institute of Soil & Environmental Sciences University of Agriculture, Faisalabad. Pakistan, 2002-02-06)