April 1972

April 1972: 228 companies

April 4, 1972 6 companies

April 5, 1972 10 companies

April 6, 1972 12 companies

April 7, 1972 13 companies

April 10, 1972 11 companies

April 11, 1972 11 companies

April 12, 1972 11 companies

April 13, 1972 7 companies

April 14, 1972 14 companies

April 17, 1972 6 companies

April 18, 1972 12 companies

April 19, 1972 14 companies

April 20, 1972 13 companies

April 21, 1972 19 companies

April 24, 1972 4 companies

April 26, 1972 17 companies

April 27, 1972 20 companies

April 28, 1972 28 companies