Astm D 1997 – 91 (Reapproved 2001) Pdf free download May 7, 2022January 19, 2021 by Mike Standard Test Method for Laboratory Determination of the Fiber Content of Peat Samples by Dry Mass1 This standard is issued…Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here