Within any Class A-1 District, no building, structure or premises shall be used or arranged or designed to be used, except for one or more of the following uses:
   (a)   Any principal use or accessory use permitted in Class A Districts with the same regulations and restrictions that are applicable to it in Class A Districts;
   (b)   Two-family dwellings, under the same regulations that are applicable to uses in Class A Districts.
(Ord. 1970-53. Passed 8-10-70.)