Labels:text | screenshot | font OCR: HELP CONTENTS #11 # Z-40Z To use Help, click on one of the red words below. FINDING YOUR WAY AROUND LOG BOOK WAREHOUSE POP-UP STOREROOM 2.8.72 A - Z OF MACHINES EXPLORING AN ARTICLE PRINCIPLES OF SCIENCE USING THE INDEX BOOK OF INVENTORS OPTIONS - COPYING AND PRINTING HISTORY OF MACHINES CREDITS MAMMOTH SCHOOL