Is it intentional that some of the resources in this series do not have a study guide at the end of the book and some do? This seems odd to me. Is it possible they were accidentally not included from the publisher?
Here are a couple examples:
LLS:BST02EX
2015-11-05T00:09:00Z
BST02EX.logos4
LLS:BSTUS67CO1
2016-10-03T14:58:41Z
BSTUS67CO1.logos4