1. The difference between LC and DDC :
One of the main differences is the way the DDC uses call numbers; and its much easier to recognize the books by the way the are organized into specific groups. The LC does arrange well, but the codes for the DDC and unique numbers make and find to locating the books way easier. I would say the DDC is more efficient due to the way is grouped. There are 10 major subject groupings. Although, the LC does arrange books that are specific to each other, the DDC just has a more complete and able system that one can easily follow.
http://letterofcreditforum.com/content/what-difference-between-dc-and-lc-discrepancies
2. http://www.loc.gov/index.html(Library of congress...)
http://www.bl.uk/(British Library...)
http://www.nlt.go.th/(Thai National Library...)
http://library.spu.ac.th/e-library/index4.html(Sripatum University Library...)
http://catalogue.nla.gov.au/Record/4585014(ASEAN Community Website...)
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