John Lockyer Books

Production And Operations Management

By K.G Lockyer, Keith Gerald Lockyer, Alan Muhlemann, John S. Oakland, John Lockyer, John Oakland, K. G. Lockyer, Keith; Muhlemann, Alan & Oakland

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Sunshine Level 11 Stories: Set B

By John Lockyer

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Rigby Reading Sails: Leveled Reader Silver Grades 4-5 Book 5: Do Rules Rule?

By Patricia Roberts, Rigby, Carol Krueger, John Lockyer, Jack Gabolinscy, RIGBY

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Four sets of both fiction and non-fiction leveled readers; each six book set is designed for use in guided reading sessions and includes reproducible teacher support materials

Rigby Reading Sails

By Patricia Roberts, Rigby, Carol Krueger, John Lockyer, Jack Gabolinscy, RIGBY

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Four sets of both fiction and non-fiction leveled readers; each six book set is designed for use in guided reading sessions and includes reproducible teacher support materials

Rigby Reading Sails: Leveled Reader Silver Grades 4-5 Book 11: Accidental Discoveries

By Patricia Roberts, Rigby, Carol Krueger, John Lockyer, Jack Gabolinscy, RIGBY

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Four sets of both fiction and non-fiction leveled readers; each six book set is designed for use in guided reading sessions and includes reproducible teacher support materials

Rigby Reading Sails: Leveled Reader Emerald Grades 4-5 Book 2: Time Quest

By Rigby, John Lockyer, RIGBY

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Rigby Reading Sails: Leveled Reader Emerald Grades 4-5 Book 16: Weird Weather

By Rigby, John Lockyer, RIGBY

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19 pages : color illustrations, 20 cm DRA level 40 "Advanced fluency." Includes glossary, index, and guide notes

Rigby Sails

By Patricia Roberts, Carol Krueger, John Lockyer, Jack Gabolinscy, RIGBY

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Four sets of both fiction and non-fiction leveled readers; each six book set is designed for use in guided reading sessions and includes reproducible teacher support materials

Rigby Sails: Leveled Reader Diamond Hunter

By Rigby, John Lockyer, TBD

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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.