Milton J. Blumenfeld Books

Careers in beauty & grooming

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Briefly describes fifteen beauty and grooming careers, such as beauty school instructor, electrologist, product formulation chemist, and beauty salon owner.

Careers in a supermarket

By Lerner Mark.

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Briefly describes fifteen supermarket careers, such as produce manager, bookkeeper, rack jobber, and store manager.

Careers in a Library

By Rebecca Anders

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Introduces career opportunities in a library, including cataloger, book shelver, computer operator, children's librarian, A-V aide, maintenance person, and publicity specialist.

Careers in Hotels & Motels (An Early Career Book)

By Mark Lerner, Lerner Mark., Milton J. Blumenfeld

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Presents a brief look at career opportunities in the hotel industry including bell captain, housekeeper, cashier, personnel director, and general manager.

Careers in photography

By Milton J. Blumenfeld

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An introduction to career opportunities in the field of photography, including commercial photographer, photography instructor, retoucher, colorist, and framer.

Careers in toy making

By Lerner Mark.

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Briefly discusses 15 career opportunities in the field of toy and game manufacturing.

Careers at a zoo

By Lerner Mark.

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Describes 15 careers at a zoo, including zoo keeper, veterinarian, animal commissary keeper, graphic arts specialist, zoo stores supervisor, and the director of visitor programs.

Careers in auto racing

By Lerner Mark.

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Briefly describes 15 career opportunities related to automobile racing including mechanic, ambulance attendent, and public relations manager.

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.