Basic data, economic, governmental, social: Chester County, Pennsylvania /

by Twark, Allan Joseph, 1931-, Pierce, Helen M.
Published 1961

Security analysis & portfolio management : a casebook /

by Twark, Allan Joseph, 1931-, Bowlin, Oswald Doniece, 1928-, Bowlin, Oswald Doniece, 1928-, Dukes, William Parks, Dukes, William Parks
Published 1973