21.   The biggest force behind the boom has been the explosion in reading groups.

22.   The book is being used by reading groups and has been adopted for college courses ranging from anthropology to African-American studies.

23.   The growing popularity of reading groups and book clubs attests to the desire to talk about books as well as read them.

24.   The growing popularity of reading groups and book clubs attests to the growing desire to talk about books as well as read them.

25.   The Shakespeare Society is barely a year old, but it has already run several symposiums and organized reading groups in and around New York.

26.   They did just that at the reading group.

27.   They were gathered in the high-ceilinged living room of a rambling house in Flatbush, at the monthly meeting of their reading group.

28.   We heard about her reading group, her organization of cooking marathons with her friends, her role as a one-woman support system for her fellow lawyers.

29.   Yes, according to the growing number of reading groups that meet not in homes or libraries but online.

30.   To counter the competition, many independents have expanded into book-signings, seminars and reading groups.