40 1 10 Michael Parkin Additional Author mixed material 0201094452 California Addison Wesley 1990 Bradley R Schiller Additional Author mixed material 0070561680 New York McGraw Hill 1991 Priciples, Problems & Policies Campbell R McConnell Additional Author mixed material 007045521X New York McGraw Hill 1990 J. Vernon Henderson Additional Author mixed material 0669144932 Toronto D.C Heath 1991 Michael Parkin Additional Author mixed material 0201094452 California Addison Wesley 1990 Bradley R Schiller Additional Author mixed material 0070561680 New York McGraw Hill 1991 Priciples, Problems & Policies Campbell R McConnell Additional Author mixed material 007045521X New York McGraw Hill 1990 J. Vernon Henderson Additional Author mixed material 0669144932 Toronto D.C Heath 1991 Michael Parkin Additional Author mixed material 0201094452 California Addison Wesley 1990 Bradley R Schiller Additional Author mixed material 0070561680 New York McGraw Hill 1991