Joan Elma Rahn Books

Biology: The Science of Life

By Joan Elma Rahn

Average: 0.00, 0 Ratings

Instructor's manual for Biology

By Joan Elma Rahn

Average: 0.00, 0 Ratings

Biology

By Joan Elma Rahn

Average: 0.00, 0 Ratings

Keynotes: botany simplified

By Joan Elma Rahn

Average: 0.00, 0 Ratings

Holes

By Joan Elma Rahn

Average: 0.00, 0 Ratings

Introduces holes and the many ways they are useful to us, as in scissors, flower pots, fish nets, tunnels, lace, keys, garden hoses, and computer cards.

How plants travel.

By Joan Elma Rahn

Average: 0.00, 0 Ratings

Describes the many ways plants are dispersed by wind, water, animals, and people.

Grocery store botany.

By Joan Elma Rahn

Average: 0.00, 0 Ratings

Describes the anatomy of some common food plants and gives directions for 25 simple demonstrations and experiments illustrating the functions of some plant parts, especially those used for food.

More about what plants do.

By Joan Elma Rahn

Average: 0.00, 0 Ratings

A collection of simple experiments concerned with plant growth. A sequel to Seeing What Plants Do.

How plants are pollinated

By Joan Elma Rahn

Average: 0.00, 0 Ratings

Describes the many ways that flowers are pollinated and the pollinating agents that make the differences in flowers possible.

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.