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This is to certify that your paper entitled «The Study of Thermodyna mic Cons ant ΔGr , ΔSr and ΔHr ortho – Qui none and Azid ion by Cycli c Voltam metry me thod» was indexed with 2 pages, in the CIVILICA citation database, code COI:ISPTC15_0614, after evaluation and approval of the referees of the "15th Iranian Physical Chemistry Conference held in Tehran 2012.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above conference and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.