00289pam a2200109 a 4500020000500000041000500005082001500010100002300025245006900048260004500117300001700162  c  h  a658.8bGOS  a Adrian  Gostich .  aThe Levity Effect Why It Pays to Lighten Lip hTextual Documents  aAmericabJohn Wisely and sons Inc.c2005  a200:bpaper.