Andres Llamas Ruiz Books

Examines the different forms of survival techniques of mammals, insects, reptiles, and fish, describing how they capture food and escape from predators.

The origin of the universe

By Andres Llamas Ruiz

Average: 0.00, 0 Ratings

Describes briefly the most widely accepted scientific explanations regarding the origins of the universe, the birth of stars, and the formation of the planets.

Rivers

By Andres Llamas Ruiz

Average: 0.00, 0 Ratings

An illustrated description of the creation, types, stages, and effects of rivers.

Metamorphosis

By Andres Llamas Ruiz

Average: 0.00, 0 Ratings

Describes the process of metamorphosis in caterpillars, tadpoles, and dragonfly larvae.

Trees

By Andres Llamas Ruiz

Average: 0.00, 0 Ratings

Describes the stages of development in the life of a tree, from seed to full-grown plant.

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.