How do I search HOLLIS with a numeric identifier such as an ISBN, DOI, PMID, or OCLC number?
Enter just the number (no spaces, no letters) into the search box.
HOLLIS’s main search box accepts common numeric identifiers such as ISBN, ISSN, DOI, PMID (PubMed ID), and OCLC numbers. It also accepts HOLLIS numbers, which are the unique identifier assigned to each Library Catalog record.
Important notes:
- Searching by ISBN, etc., is convenient but not exhaustive, as many HOLLIS records do not include the relevant numeric identifiers for the item.
- Call numbers and barcodes are not searchable this way.
- To search by local call number, use Code:Local Call Number
- To search by Library of Congress call number, use Starts with/Browse
- To search by barcode, go to Advanced Search and select the “barcode” option under "Search for"
Have another HOLLIS question? Our HOLLIS User Guide provides an overview of HOLLIS's features and functions.
- Ask a Librarian, including chat and email, will be suspended on Thursday, July 4 through Sunday, July 7, 2024, in observance of the holiday weekend. Queries received during this time will be addressed beginning Monday, July 8. .
- If you're experiencing an ongoing technical issue when you attempt to access library materials with your HarvardKey during this time, please report it to Library Technology Services.
Chat
Monday-Thursday 9am-9pm
Friday9am-7pm
Saturday9am-5pm
Sunday 12noon-7pm
Chat is intended for brief inquiries from the Harvard community.
Reach out to librarians and other reference specialists by email using our online form. We usually respond within 24 hours Monday through Friday.
Meet
Talk to a librarian for advice on defining your topic, developing your research strategy, and locating and using sources. Make an appointment now.
These services are intended primarily for Harvard University faculty, staff and students. If you are not affiliated with Harvard, please use these services only to request information about the Library and its collections.