Name of source Gazetter of India and World of learning (Library Science)
Gazetter of India
History of medieval India – Gazetter of India
History of India – Gazetter of India
Fauna and flora of India – Gazetter of India
National Animal of India – Gazetter of India
Climate of Delhi – Gazetter of India
World of learning
Museum gallery in USA – World of learning
Art gallery in Japan – World of learning
Archives gallery in USA – World of learning
Name of librarian of National Library of USA – World of learning
Address of Indian Council of Agricultural Research – World of learning
Name of President of the Royal Society London – World of learning
Name of source Europa world year book (Library Science)
Name of source Encyclopaedia of American
India: a reference Annual (Library Science)
Name of source Census of India
Ulrich’s International Periodicals Dictionary (Library Science)
Keesing’s record of world events
Indian Books in Print, Name of source
Webster Geographical dictionary
McGraw Hill Encyclopaedia of Science and Technology,
Dictionary of National Biography