PMBOK 7th edition

I was shipped this and “returned it” due to the wave in it and they sent me another. Book is still good, just has a wave in it. See pictures.
PMBOK Guide is the go-to resource for project management practitioners. The project management profession has significantly evolved due to emerging technology, new approaches and rapid market changes. Reflecting this evolution, The Standard for Project Management enumerates 12 principles of project management and the PMBOK Guide – Seventh Edition is structured around eight project performance domains. This edition is designed to address practitioners’ current and future needs and to help them be more proactive, innovative and nimble in enabling desired project outcomes. This edition of the PMBOK Reflects the full range of development approaches (predictive, adaptive, hybrid, etc.).