![Catholic customs & traditions : a popular guide](https://nationalbookswap.com/pbs/m/22/4322/9780896224322.jpg)
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This is a good, basic reference book about the customs of the Catholic church. It is a great book for those interested in the "why do they do that?" during Mass. I enjoyed it as a review of the traditions I have long held dear and didn't necessarily know the origins of those traditions.