john H. Saxon  <br/><br/>
Saxon math : an incremental development 

 - Norman, OK,   Saxon Publishers,   1989 
<br/><br/><label>ISBN: </label>9781565770331, 9781565770362, 9781565771536, 9780939798544, 9780939798421, 9780939798377, 1565770331, 1565770366, 1565771532, 0939798549, 0939798425, 0939798379