Ordinance No. 485, approved February 10, 1947, and
amended or supplemented by Ordinance No. 518, approved December 28,
1950; Ordinance No. 527, approved January 14, 1952; Ordinance No.
522, approved January 24, 1955; Ordinance No. 609, approved May 27,
1963; Ordinance No. 618, approved January 25, 1965; Ordinance No.
619, approved February 8, 1965; Ordinance No. 627, approved February
14, 1966; Ordinance No. 634, approved June 27, 1966; Ordinance No.
647, approved March 11, 1968; Ordinance No. 654; approved September
9, 1968; Ordinance No. 669, approved July 14, 1969; Ordinance No.
671, approved September 22, 1969; Ordinance No. 675, approved February
9, 1970; Ordinance No. 686, approved November 23, 1970; Ordinance
No. 689, approved January 25, 1971; Ordinance No. 725, approved September
24, 1973.