An Act amending the act of April 12, 1951 (P.L.90, No.21), known as the Liquor Code, further providing for the definition of "case", for sale of malt or brewed beverages by liquor licensees and for retail dispensers' restrictions on purchases and sales; and further prohibiting interlocking business and unlawful acts relative to liquor, malt and brewed beverages and licensees.