1972—Pub. L. 92–604 authorized appropriations of $400,000 for fiscal years ending June 30, 1974, 1975, 1976, and 1977.

1970—Pub. L. 91–451 substituted “for the period beginning July 1, 1969, and ending June 30, 1973” for “for the fiscal year ending June 30, 1970”.