Which packaging innovation in the 1960s-70s dramatically increased accessibility of religious texts, particularly among younger spiritual seekers in Western markets?

Religious texts are among the oldest mass-produced products in human history, with fascinating innovations in their packaging and presentation over centuries. From scrolls to digital formats, the 'packaging' of sacred wisdom has evolved dramatically to meet changing consumer needs while preserving traditions. Test your knowledge about a groundbreaking packaging innovation that revolutionized access to religious texts in the modern era.

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Pocket-sized paperback editions with modern cover art and contemporary language
Luxury leather-bound collector editions with gold leaf embellishments
Interactive CD-ROMs with searchable text and audio commentaries
Waterproof vinyl covers designed for missionary work in tropical regions