Roberto Romero Books

Placental bed vascular disorders

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"The role of the placental bed in normal pregnancy and its complications has been intensively investigated for 50 years, following the introduction of a technique for placental bed biopsy. It is no...

Clinical Maternal Fetal Medicine

By Frank A. Chervenak, Roberto Romero, Hung N. Winn

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Clinical Maternal Fetal Medicine

By Frank A. Chervenak, Roberto Romero, Hung N. Winn

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Clinical Maternal Fetal Medicine

By Frank A. Chervenak, Roberto Romero, Hung N. Winn

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Directory of Financial Aids for International Activities

By Elaine Randolf

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Placental Bed Disorders

By Ivo Brosens, Robert Pijnenborg, Roberto Romero

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Clinical Maternal-Fetal Medicine, Second Edition

By Frank A. Chervenak, Roberto Romero, Hung N. Winn

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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.