Ali, N., E. U. Khan, F. Khan, P. Akhtar, and A. Waheed. “DETERMINATION OF AEROSOL MEAN RESIDENCE TIME USING 210Pb AND 7 Be RADIONUCLIDES IN THE ATMOSPHERE OF ISLAMABAD”. The Nucleus 47, no. 1 (March 4, 2010): 25–29. Accessed July 24, 2024. http://www.thenucleuspak.org.pk/index.php/Nucleus/article/view/906.