You're right. And "covering" is a strong term for the book. It only introduces them, offers a few exercises, and moves on. It's still 200 pages. It's intended to help engineering students (mechanical, civil/structural, nuclear, etc.) discover these wonders and then choose which ones to go deep with based on their needs and interests.
Thanks for sharing and seems it would be useful for non-engineering students as myself as well. Going to check it out =)