What is the significance of the term "subs. by s. 38, ibid., for "one year", respectively (w.e.f. 20-6-1979)" in the context?
The term "subs. by s. 38, ibid., for "one year", respectively (w.e.f. 20-6-1979)" in the context refers to a substitution made by Section 38 of the Constitution (Forty-fourth Amendment) Act, 1978. This substitution changes the reference from "six months" to "one year from the date of the passing of the second of the resolutions approving the Proclamation under clause (3)" with an effective date of 20-6-1979.