Assembled might be a better word for intarsia than inlaid. We
learned it from the Magistros a few years ago. They used a super
glue. Phil did a couple of excellent videos on how to do intarsia,
but a quick search on amazon revealed nothing. There are still some
copies available to borrow from various Federations in the American
Federation of Lapidary Societies. If you could find the Magistros,
maybe they could still sell you a copy.
Meanwhile, Tom and Kay Benham are actively teaching and writing
about intarsia. I believe they teach both at William Holland in
Georgia and for the Southeast Federation at Wildacres in North
Carolina. They are editors at Lapidary Journal where they have
published some articles.