3 1 50 principles and practices Buskirk, Richard H. Primary Author mixed material 0070093563 New York McGraw-Hill 1992 Buskirk, Richard H. Additional Author Russel, Frederic A. Primary Author Beach, Frank H. Additional Author mixed material New York McGraw-Hill 1969 Aust, Marilee Primary Author Buskirk, Richard H. Additional Author Carver, Barbara Additional Author Mate, Ed Additional Author Novak, Alys Additional Author O'brien, Don Additional Author mixed material 0944303129 Denver Premier Entrepreneur Programs 1995