8 1 10 robert boyd Primary Author Joan B. Silk Additional Author mixed material 9780393912272 New York W.W Norton & Company 2012 41aqOW-oPIL.jpg.jpg Olive Boyd Primary Author Barrett Additional Author mixed material 0094634009 London Sage Publications 1980 a Decision- Focused Approach, 4th.Ed Orville C. Walker Primary Author Boyd Additional Author Mullins Additional Author Larreche Additional Author mixed material New York McGraw Hill 1999 Boyd Primary Author mixed material Orville C. Walker Additional Author Harper W .Boyd Primary Author Jean Claude Larreche Additional Author mixed material 9794118265 Jakarta Erlangga 2000 Text and Cases 5th.Ed Harper W .Boyd Primary Author Ralph Westfall Additional Author Stanley F. Stasch Additional Author mixed material 0256025304 Illinois Ricard D. Irwin 1981 Robert Thornton Morrison Primary Author Robert Neilson Boyd Additional Author mixed material Boston Allyn and Bacon 1973 Oliver Boyd-Barrett Primary Author mixed material California Sage Publications