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Rajesh K. Yadav, Nishant Dabhade, International Letters of Social and Humanistic Sciences 4 (2013) 49-69.
Borowski A., International Letters of Social and Humanistic Sciences 4 (2013) 70-74.
Paul Bukuluki, International Letters of Social and Humanistic Sciences 5 (2013) 27-44.
Mohsen Mehrara, Maysam Musai, International Letters of Social and Humanistic Sciences 5 (2013) 55-62.
Debiprasad Mukherjee, International Letters of Social and Humanistic Sciences 6 (2013) 41-48.
Tomáš Hes, Alena Neradová, Karel Srnec, International Letters of Social and Humanistic Sciences 7 (2013) 55-75.
Kinga Dziwańska, International Letters of Social and Humanistic Sciences 7 (2013) 96-112.
Borowski A., International Letters of Social and Humanistic Sciences 7 (2013) 113-118.
Mohsen Mehrara, Maysam Musai, International Letters of Social and Humanistic Sciences 8 (2013) 1-7.
Jacek Tittenbrun, International Letters of Social and Humanistic Sciences 11 (2013) 10-34.
Mohsen Mehrara, Hamid Abrishami, Mostafa Boroujli, Mahan Amin, International Letters of Social and Humanistic Sciences 11 (2013) 76-83.
Borowski A., International Letters of Social and Humanistic Sciences 11 (2013) 100-105.
Sele Sylvester Ebisin, International Letters of Social and Humanistic Sciences 2 (2014) 1-9.
Tittenbrun J., International Letters of Social and Humanistic Sciences 2 (2014) 20-40.
Borowski A., International Letters of Social and Humanistic Sciences 2 (2014) 110-121.
Pawa Tersoo, International Letters of Social and Humanistic Sciences 3 (2014) 26-36.
Rabi'u Muhammad Ishaq, International Letters of Social and Humanistic Sciences 3 (2014) 37-44.
Adoga James Ada, International Letters of Social and Humanistic Sciences 3 (2014) 45-52.
Bahram Meihami, Hussein Meihami, International Letters of Social and Humanistic Sciences 3 (2014) 80-91.
Onyike Maggaret Odu, International Letters of Social and Humanistic Sciences 4 (2014) 31-39.
Uloma Charity Oguzor, International Letters of Social and Humanistic Sciences 4 (2014) 97-104.
Okezie A. Ihugba, Alex Odii, A. C. Njoku, International Letters of Social and Humanistic Sciences 5 (2014) 21-34.
Okezie A. Ihugba, Bankoli Bankong, N. C. Ebomuche, International Letters of Social and Humanistic Sciences 5 (2014) 92-113. ( Received 04 October 2013; accepted 30 November 2013 ).