Skip to content
A Product of William S. Hein & Co., Inc.
Home
General
Guides
Reviews
News
LOG IN
About Us
Find our leadership and learn about our company history.
Digital Services
Learn about Hein's digital & preservation equipment.
Testimonials
Hear why so many have found smarter, better, faster research with HeinOnline.
Publishing Partnerships
Partner with HeinOnline to expand your reach.
Press Releases
See what we've released in the past few months.
Careers
Thinking about a career at HeinOnline? Explore opportunities!
Diversity, Equity, & Inclusion
Discover how we champion DEI initiatives within and beyond our company.
Newsletters
Stay updated on HeinOnline’s latest content, features, and updates.
Logos
Promote HeinOnline and Hein across your organization and to end users.
Consortia
Explore our growing list of consortia collaborations.
Publishing Partnerships
Partner with HeinOnline to expand your reach via print or online.
Integrations
See who we partner with to bring the latest integration to HeinOnline.
International Sales Agents
View our network of regional sales agents from around the world.
Tools
View global features, AI tools, research aids, and more.
Knowledge Base
Explore FAQ, tips and tricks, videos, and more.
LibGuides
Discover database content, search tips, and tools to aid your research.
YouTube
Discover how-to videos, search tips, and navigation guides.
Live Demos
Get an intro demo or an advanced training from our experts.
View All Support Resources
Explore a variety of resources to enhance your research.
Customer Service Web Portal
Manage IPs, review invoices, and access usage stats.
Contact Us
Looking to connect us? Contact us via phone, email, or fax.
Publishing Partnerships
Partner with HeinOnline to expand your reach via print or online.
Request a Quote or Trial
Learn more about annual subscription and trial information.
Databases
Journals and Periodicals
Access thousands of scholarly, international, and commercial journals.
U.S. Federal Content
Access federal documents, statutes, congressional records, and more.
U.S. State Content
Explore databases on state laws, history, and government documents.
International Resources
Browse international treaties, constitutions, and more.
Case Law
Access dedicated databases for U.S. and international case law in HeinOnline.
Special Collections
Browse databases on Indigenous law, criminal justice, and more.
New Databases
Explore HeinOnline’s latest databases and discover new research resources.
Subscriptions
Annual Subscriptions
Tailored database packages for seamless research, priced by institution.
Social Justice Suite
Access free databases for research and global impact.
Digital Ownership
Own collections on a hard drive for lasting access.
Request a Quote or Trial
Learn more about annual subscription and trial information.
Customer Service Web Portal
Manage IPs, review invoices, and access usage stats.
Print Products
Catalog
Search our catalog by title, author/editor, ISBN or ISSN, and more.
Print Publications
Browse essential publications for scholars and professionals.
Review Copy Requests
Request digital or print copies to review for a course.
Electronic Greenslips
Receive curated law title updates tailored for librarians.
Orders, Claims, and Returns
Get help with orders, returns, and claims through Customer Service.
Electronic Devices And Circuit Theory Ppt