WAVERLY (IOWA)-All-session passes for the 2001 NCAA Division III National Wrestling Championships go on sale Thursday, Feb. 1, according to Wartburg College athletic director Gary Grace. Wartburg College will host the tournament March 2-3 at Young Arena in Waterloo.     Cost of the passes is $20 for adults and $15 for students. Individual session tickets will not be pre-sold.     With an all-session pass, wrestling fans can see the top 160 Division III wrestlers in the nation. Augsburg College (Minn.) returns as the defending national champion with the host Wartburg College Knights, Montclair State (N.J.) and UW-La Crosse as the top contenders to dethrone the Auggies.     To order all-session passes, call the Wartburg College Athletic Office at 319-352-8309.