Shah, Muzaffar Ali Dr creator Khattak, Muhammad Ali Dr Butt, Noor Muhammad Dr Awan, Abdul Majid Dr Baig, Mirza Mansoor Dr Alam, Anis Dr Salam, Abdul Prof Ahmed, Sh. Aftab Qureshi, Nasir Ahmed Prof Ahmed, Sh. Aftab Qureshi, Nasir Ahmed Prof Hussain, Tahir Dr text Lahore Sh. Ghulam Ali & Sons 1971 Second edition. monographic eng

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xvi, 202pages : illustrations ; 25 cm. Dr. Muzaffar Ali Shah, Dr. Muhammad Ali Khattak, Dr. Noor Muhammad BuDr. Abdul Majid Awan, Dr. Mirza Mansoor Baig, Dr. Anis Alam, Prof. Abdul Salam, Sh. Aftab Ahmed, Prof. Nasir Ahmed Qureshi; editors Sh. Aftab Ahmed, Prof. Nasir Ahmed Qureshi, Dr. Tahir Hussain. Physics 531.1133 SHA GCL 230407