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. "First Pages", Physical Geography Research, 51, 2, 2019, 1-5. doi: 10.22059/jphgr.2019.73644

. (2019). 'First Pages', Physical Geography Research, 51(2), pp. 1-5. doi: 10.22059/jphgr.2019.73644

, "First Pages," Physical Geography Research, 51 2 (2019): 1-5, doi: 10.22059/jphgr.2019.73644

. First Pages. Phys Geog Res. 2019;51(2):1-5 (In Persian). doi: 10.22059/jphgr.2019.73644