2) In the mid-20th century, the catalogue in the form of books was the most common.

3) For large libraries, they often prefer many large books.

4) It is difficult to integrate the printed catalogue with cataloging, typesetting, proofreading and printing, and it will become obsolete before publication.

5) The new book catalogue must be added manually.

6) The card catalogue was developed at the end of last century, and it is easier to keep pace with the times. However, a large card catalog is troublesome and difficult to manage.

7) Cards (catalogs) have been popular for about a century.

8) Now we are in the era of online catalogue.

9) Of the four viewpoints we follow, three have not attracted much attention in the history of libraries.

10) We know that before the 20th century, there was no accepted concept, and standardization and internationalization only played a small role.

1 1) In addition, maybe in a place like the Alexandria Library, a giant library with international customers.

It is only in the past 70 years that the concept of "work" has matured.

13) Dedication to users is an important thread that runs through the history of the library.

14) No matter how big or small the library is, its books are on stones or paper (unchanged).

15)17th century, Tom Hardy was the librarian of Bodley Library of Oxford University in England. He worked hard in the author catalogue for nine years.

16) 1674 He wrote in the preface: "Although I am exhausted, I don't think I should complain or get rid of the shackles around my neck. I am stubborn in my work and even ignore my health. I may successfully solve this matter as soon as possible. "

17) Finally, he wrote: "In this work, I gave Yu students a tool, so that each of them can build it by themselves and walk out of the forest of information easily-this tool is the index of the selected books, which will greatly promote his personal research.

Your translation is still very good. Let me give you some advice:

1) When translating into English, please put Chinese at the bottom of English sentences.

2) Please be sure to use the serial number before the sentence to facilitate reading and error correction.

3) Some changes may not meet your requirements, please correct me.