One printed organic sulfur information manual (44 pages) is included free with every order. Additional or extra printed manuals are $4.00 each. A .pdf file of the reference manual will be emailed free to our customers when requested — contact the office manager at email: firstname.lastname@example.org for a copy and request “OS Ref Manual – 6th Edition”.
The manual is published by Iguana Press and is copyright © protected 2007–2016. Do not duplicate or use the manual, website information, or email PDF files for anything except private/personal-non-profit use without written permission.