By Srivastava Sanjeev Kumar   in Journal of Geography in Higher Education

ISSN:1466-1845|37|3|367-384

Routledge Ltd‎(2013)‎

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By Srivastava Sanjeev Kumar   Tait Cynthia   in Journal of Geography in Higher Education

ISSN:1466-1845|36|4|527-545

Routledge Ltd‎(2012)‎

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By Srivastava Sanjeev   Ojha S. P.   in Journal of Modern Optics

ISSN:1362-3044|56|1|33-40

Taylor & Francis Ltd‎(2009)‎

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By Ojha S P   Srivastava Sanjeev K   Kumar N   Srivastava S K   in Optik – International Journal for Light and Electron Optics

ISSN:0030-4026|114|3|101-105

Urban & Fischer‎(2003)‎

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