William A. Sahlman Books

Financing Entrepreneurial Ventures (Business Fundamentals, HBS Number: 9202)

By Howard Stevenson, Amar Bhide, William A. Sahlman

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The Entrepreneurial Venture

By William A. Sahlman

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How to Write a Great Business Plan Harvard Business Review Classics

By William A. Sahlman

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HBR s 10 must reads on entrepreneurship and startups

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The best entrepreneurs balance brilliant business ideas with a rigorous commitment to serving their customers' needs. If you read nothing else on entrepreneurship, read these 10 articles by experts...

HBR's 10 Must Reads on Entrepreneurship and Startups (featuring Bonus Article Why the Lean Startup Changes Everything by Steve Blank)

By Steve Blank, Reid Hoffman, Harvard Business Review, William A. Sahlman, Marc Andreessen

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The best entrepreneurs balance brilliant business ideas with a rigorous commitment to serving their customers' needs. If you read nothing else on entrepreneurship and startups, read these 10 articl...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.