We have had a similar conversation when learning RDA and cataloguing in general this week. In our instance though we were discussing how many patrons are contacting us wanting their dates of birth, full names, etc. taken off the bibliographic records and how in today’s age this information is ripe for harvesting from catalogues. Maybe this is what the subfield d in the 100 field is purposely being left empty. Cheers Sharron From: Erika Janette Charles Nino (CABU) <[log in to unmask]> To: [log in to unmask] Sent: Monday, 14 May 2012, 16:26 Subject: [MARC] 046-100 AUTHORITY RECORD Hi all, I would like to know why now with RDA is used now Tag 046 instead of $d in Tag 100? With this practice, such information is accessible only to librarians that review the authorities being that that 046 is not recovered in OPACs Thanks, LC control no.: n 79038532 LCCN permalink: http://lccn.loc.gov/n79038532 HEADING: Cortázar, Julio 000 01055cz a2200277n 450 001 4215160 005 20120407074810.0 008 790424n| acannaabn |b aaa 010 __ |a n 79038532 |z n 88637611 035 __ |a (OCoLC)oca00272052 040 __ |a DLC |b eng |c DLC |d DLC |d OCoLC |d DLC |d OCoLC |d CSt |d UPB 046 __ |f 1914 |g 1984 053 _0 |a PQ7797.C7145 100 1_ |a Cortázar, Julio 374 __ |a author 400 1_ |a Кортасар, Хулио 400 1_ |a קורטאסר, חוליו 400 1_ |a קןרטאזאר, חוליו 667 __ |a Machine-derived non-Latin script reference project. 667 __ |a Non-Latin script references not evaluated. 667 __ |a The following pseudonym is a valid AACR 2 heading: Denis, Julio 670 __ |a His Los reyes, 1949. 670 __ |a Prego, O. La fascinación de las palabras, c1985: |b t.p. (Julio Cortázar) p. 9-10 (died Feb. 12, 1984) 670 __ |a BNE Web OPAC, Oct. 30, 2006 |b (Cortázar, Julio (1914-1984); wrote poetry under the pseudonym Julio Denís) 952 __ |a RETRO 953 __ |a xx00 |b ta30 - - - - - - - - - - - - - - - - - - - - - - - - - - ...las bibliotecas han liberado a más personas que todas las guerras del mundo. Erika Charles Niño. Procesos Técnicos. Procesamiento Documental. Capilla Alfonsina Biblioteca Universitaria<http://www.capillaalfonsina.uanl.mx/> Universidad Autónoma de Nuevo León<http://www.uanl.mx/> (52) + (01 81) 83 29 40 15 ext. 5392