Sahoo Gagan. creator text Delhi Khanna Book Pubishing Co. (p) Ltd. c2005 2nd ed. monographic 509 pages : Illustrations ; Visual Basic (Computer program language) QA 76.76 SAH 8187325127 https://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=75804 http://www.vlebooks.com/vleweb/product/openreader?id=none&isbn=9780471265122 https://www.loc.gov/catdir/toc/wiley022/2002277999.html https://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&db=nlabk&AN=75804 http://www.vlebooks.com/vleweb/product/openreader?id=none&isbn=9780471265122 https://www.loc.gov/catdir/toc/wiley022/2002277999.html