http://book.klll.cc/ebooks/author/54036.opds?sort_order=downloads 2025-11-16T04:40:11Z Books by Mahalanobis, P. C. (Prasanta Chandra) Free eBooks since 1971. Project Gutenberg https://book.klll.cc webmaster@gutenberg.org https://book.klll.cc/gutenberg/favicon.ico 25 1 2025-11-16T04:40:11Z https://en.wikipedia.org/wiki/Prasanta_Chandra_Mahalanobis See also: en.wikipedia 2025-11-16T04:40:11Z https://book.klll.cc/ebooks/66944.opds The Principle of Relativity Albert Einstein and H. Minkowski