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All the material on this website is open source and can be freely used for non-commercial educational purposes. However, this material should not be copyrighted or used for commercial purposes.

Wherever, images or videos have been used from other open source websites or journal articles, the source has been acknowledged. The flash videos from the Indira Gandhi national Open University (IGNOU) have been permitted by the university on this website with the understanding that they will not be used commercially.

Please contact us for any query on using images and videos from this website.

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