§151. Units for supervision; supervising principals where union impracticable
(REPEALED)
SECTION HISTORY
1965, c. 188, (AMD).
1967, c. 425, §19 (AMD).
1971, c. 610, §21 (AMD).
1973, c. 571, §§13-16 (AMD).
1973, c. 783, §1 (AMD).
1977, c. 25, §§1,2 (AMD).
1981, c. 693, §§1,8 (RP).