This is a lot of 9 Harver Junior World Encyclopedia by Harver Educational Services. They were published in 1971 by BPC Publishing Limited.
The Library of Congress catalog card number is 70-127806
Each one is a 7.5" by 10.5" hardcover book.
Volumes included in this lot are:
2 - art - bra
3 - bre - civ
5 - des - fed
8 - ins - loe
9 - lon - mom
12 - pol - roc
13 - roc - sou
14 - sou - tur
16 - Atlas / Index
All volumes are in good pre-owned condition with some label residue, wear, and writing.