#28 in 1977
http://www.basketball-reference.com/draft/NBA_1977.html
#146 in 1978
http://www.basketball-reference.com/draft/NBA_1978.html
He never signed a contract with the Blazers in 77 and went to Europe. Sounds like the lines between pro and amateur weren't real well defined in those days. So the NBA told the Bucks he was still eligible to be drafted in 78.
http://news.google.com/newspapers?nid=1310&dat=19780622&id=WsYUAAAAIBAJ&sjid=4-EDAAAAIBAJ&pg=6535,6662584