Electric switches for use in gaseous mines
Our rough guess is there are 9,500 words in this book.
At a pace averaging 250 words per minute, this book will take 0 hours and 38 minutes to read. With a half hour per day, this will take 1 days to read.
How long will it take you?
This book will take an estimated to read at a reading speed averaging words per minute. With 30 minutes per day, this will take to read.
Enter your reading speedYou can take one of our WPM reading speed tests to find your reading speed.
Create a free account to track your reading progress, build your reading list, and set reading goals.
Author
Contributions
- Crocker, Ralph W., joint author. - Contributor
Publication
1913 - Govt. Print. Off., Washington, District of Columbia
Language
English
Word Count
9,500 words, Guess
Page Count
38 pages
Identifiers
- Library of Congress Control Number14030122
- OCLC Control Number8741513
- Open LibraryOL6572312M
Classifications
- LCCTN23 .U4 no. 68
Subjects
Series Statement
- [U.S.] Bureau of mines. Bulletin 68
Reader Reviews
No reviews yet for this book.
Be the first to share your thoughts!