Here's a short story:

Encyclopedia Americana is one of the largest general encyclopedias in the English language. Following the acquisition of Grolier in 2000, the encyclopedia has been produced by Scholastic. 

The encyclopedia has more than 45,000 articles, most of them more than 500 words and many running to considerable length (the "United States" article is over 300,000 words). The work's coverage of American and Canadian geography and history has been a traditional strength. Written by 6,500 contributors, the "Encyclopedia Americana" includes over 9,000 bibliographies, 150,000 cross-references, 1,000+ tables, 1,200 maps, and almost 4,500 black-and-white line art and color images. It also has 680 factboxes. Most articles are signed by their contributors. 

Long available as a 30-volume print set, the "Encyclopedia Americana" is now marketed as an online encyclopedia requiring a subscription. In March 2008, Scholastic said that print sales remained good but that the company was still deciding on the future of the print edition. The company did not produce an edition in 2007, a change from its previous approach of releasing a revised print edition each year. The most recent print edition of the "Encyclopedia Americana" was published in 2006. 

The online version of the "Encyclopedia Americana", first introduced in 1997, continues to be updated and sold. This work, like the print set from which it is derived, is designed for high school and first-year college students along with public library users. It is available to libraries as one of the options in the Grolier Online reference service, which also includes the "Grolier Multimedia Encyclopedia", intended for middle and high school students, and "The New Book of Knowledge", an encyclopedia for elementary and middle school students. Grolier Online is not available to individual subscribers. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: When was the online version of the encyclopedia put out?
Guess: 1997

Question: Is it still updated?
Guess: Yes.

Question: What kind of students is it designed for?
Guess: high school and first-year college

Question: And who else?
Guess: public library users

Question: What is made for middle and high school kids?
Guess: Grolier Multimedia Encyclopedia

Question: What is designed for elementary students?
Guess: The New Book of Knowledge

Question: Is the online service available to individuals?
Guess: No.

Question: What is the biggest encyclopedia in the English language?
Guess: Encyclopedia Americana

Question: Who has produced it after the year 2000?
Guess: Scholastic

Question: After they acquired what?
Guess: Grolier

Question: How many articles are in the books?
Guess: 45,000

Question: How many words are most?
Guess: more than 500

Question: How long is the United States article?
Guess: over 300,000 words

Question: Is geography a strength for the encyclopedias?
Guess: YEs

Question: What else is a strong point?
Guess: history

Question: How many bibliographies are there?
Guess: over 9,000

Question: In what year was a print edition published?
Guess: 2006

Question: How many cross-references were there?
Guess: 150,000

Question: How many factboxes are there?
Guess: 680

Now answer the following question in the same format.

Question: How many books were in a typical print edition?

30