S R Ranganathan Biography PDF

Shiyali Ramamrita Ranganathan was a Librarian and Mathematician from India,his notable contribution was to the field,were his 5 laws of …

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Albert Einstein PDF

Albert Einstein is a famous theoretical physicist scientist,who is best known for the developing “The Theory Of Relativity” and “Photoelectric …

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Edwin Hubble Biography PDF

Edwin Hubble was born 20th November  1889year, Marshfield, US and he was passed on on 28th September 1953year,san marino, California…He was an …

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