Verify the historical accuracy of the following jurisprudential attributions regarding the evolution of the Indian Constitution's basic features:
1. The Kesavananda Bharati verdict represented the initial judicial decree explicitly barring the central legislature from abridging any codified Fundamental Rights.
2. The Indira Gandhi v. Raj Narain verdict formally integrated the overarching mechanism of 'Judicial Review' into the protective ambit of the Basic Structure.
3. The Minerva Mills verdict legally cemented the harmonious equilibrium between civil liberties (Part III) and state welfare mandates (Part IV) as an unalterable constitutional pillar.