Mahmood, Q., Pervez, A., Zeb, B. S., Zaffar, H., Yaqoob, H., Waseem, M., . . . Afsheen, S. (2013). Natural Treatment Systems as Sustainable Ecotechnologies for the Developing Countries. Hindawi Publishing Corporation.

Mahmood, Qaisar, Arshid Pervez, Bibi Saima Zeb, Habiba Zaffar, Hajra Yaqoob, Muhammad Waseem, Zahidullah, ja Sumera Afsheen. Natural Treatment Systems As Sustainable Ecotechnologies for the Developing Countries. Hindawi Publishing Corporation, 2013.

Mahmood, Qaisar, et al. Natural Treatment Systems As Sustainable Ecotechnologies for the Developing Countries. Hindawi Publishing Corporation, 2013.