Heidi Sarna Books

Frommer's? Carribean Cruises and Ports of Call: Every Ship Sailing the Caribbean, plus Bermuda and the Panama Canal!

By Heidi Sarna

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Frommer's Caribbean Cruises and Ports of Call 2001

By Heidi Sarna

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Frommer s cruises ports of call 2008

By Matt Hannafin, Heidi Sarna

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Detailed, objective reviews of hotels and restaurants to suit any budget are accompanied by up-to-date coverage of sightseeing, nightlife, shopping, and local activities; dozens of maps; and expert...

Frommer s European Cruises and Ports of Call Frommer s Cruises

By Matt Hannafin, Heidi Sarna

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Frommer's cruises & ports of call

By Heidi Sarna

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Rates and describes various cruise lines, provides information on dining, shopping, and attractions at ports of call, and offers tips on selecting and booking cruises and planning shore excursions.

Frommer s cruises ports of call 2010

By Heidi Sarna

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The authors, longtime cruisers, hit the major ports of call on the North American and Caribbean cruise routes, from Oahu and Vancouver to to New York and St Thomas their candid reviews will help fi...

Frommer s Greece 2010

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Frommer s cruises ports of call

By Heidi Sarna

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Rates and describes various cruise lines, provides information on dining, shopping, and attractions at ports of call, and offers tips on selecting and booking cruises and planning shore excursions.

Frommer's cruises & ports of call

By Heidi Sarna

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Rates and describes various cruise lines, provides information on dining, shopping, and attractions at ports of call, and offers tips on selecting and booking cruises and planning shore excursions.

Cruise Vacations For Dummies 2007 Dummies Travel

By Matt Hannafin, Heidi Sarna

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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.