Dear Professor, These days, most of the ETD repositories are being maintained using OAI-PMH compliant digital library software like Eprints.org or DSpace. OAI-PMH protocol (https://www.openarchives.org/pmh/) facilitates interoperability through metadata exchange. So, to create an union catalogue of ETDs, all that one needs to do is to set up a metadata harvesting service using software like Open Harvester Systems (https://pkp.sfu.ca/ohs/), identify the ETD repositories' OAI interface, and start harvesting the metadata from the repositories. First harvest will be a full harvest, and subsequent ones will be just incremental harvests. With regards, Francis JRD Tata Memorial Library IISc ________________________________ From: LIS-Forum <lis-forum-bounces@ncsi.iisc.ernet.in> on behalf of Ashok Asundi <ashok_asundi@yahoo.com> Sent: 17 November 2018 20:40:46 To: Lis-forum Subject: [LIS-Forum] Union Catalogue of ETDs Dear LIS Professionals, Pardon me for my ignorance really! I am unable to understand, how a Union Catalogue of ETDs is created. Please educate me as my thinking is not visualising such an information product. With regards, Prof. A.Y.AsundiFormer Professor, DLISc, Bangalore University,Bangalore