Luis Gatmaitan Books

Salamat Po Doktor 2

By Luis Gatmaitan

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Salamat Po Doktor 3

By Luis Gatmaitan

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Karaniwang Problemang Medikal ng mga Pinoy

By Luis Gatmaitan

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Payong Medikal sa mga Babae

By Luis Gatmaitan

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An ambisyosong istetoskop

By Luis P. Gatmaitan

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Pangarap ni Istet, ang ambisyosong istetoskop, na makilala sa buong daigdig. Kaya gusto niyang isang Espanyol na doktor ang magmay-ari sa kaniya. Pero ano't nagustuhan siya at binili ng isang lala...

Ang Pambihirang Buhok ni Raquel

By Luis Gatmaitan

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Si Duglit

By Luis Gatmaitan

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Aba May Baby Sa Loob Ng Tiyan Ni Mommy Filipino with parallel English text Philippine Book

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May mga lihim kami ni ingkong

By Luis P. Gatmaitan

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Kraak Nabali Ang Buto Ni Ferdie Craaak Ferdie Broke His Bone Bilingual Philippine Book

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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.