00446nam a22000977a 4500008004100000245009200041260004900133300002700182500012200209650001700331191219b           ||||| |||| 00| 0 eng d  aProceedings of the Pakistan academy of sciencesbA. Physical and computational sciences  aIslamabadbPakistan Academy of Sciencec2017  av. :b: ill.c; 28 cm.  aVol. 54, no. 1 (March, 2017)-: Vol. 54, no. 2 (June, 2017)-: Vol. 54, no. 3 (,Sep 2017)-: Vol. 55, no. 1 (Mar 2018)-:  vPeriodicals.