United States Government Publishing Office publisher pbl distributor dst United States Commerce Department National Institute of Standards and Technology (NIST) author aut Government Organization Cullen, William C. author aut text government publication eng GOVPUB Executive Agency Publications executive 2017-04-10 Commerce Department 1962-01-01 monographic deposited born digital 38 digital object pages C 13.38: https://www.govinfo.gov/app/details/GOVPUB-C13-7745f726b6445f65bd17ff4f4f07102e P0b002ee19469ca64 ocn959982397 (OCoLC)959982397 DGPO 2017-04-10 2026-07-07 GOVPUB-C13-7745f726b6445f65bd17ff4f4f07102e machine generated eng fdlp C13 GOVPUB-C13-7745f726b6445f65bd17ff4f4f07102e 7745f726b6445f65bd17ff4f4f07102e GOVPUB NBS Report The National Bureau of Standards (NBS) Reports typically consisted of preliminary or progress accounting documents. They were intended for use within the U.S. Government, and were often called “Graybacks” because of their gray covers. Before material in the reports was formally published, it was subjected to evaluation and review of its contents. The NIST Director approved the NBS Reports for public release on October 9, 2015. NOTE: THE “DATE ISSUED” ABOVE MAY DEFAULT TO JANUARY 1ST OF A GIVEN YEAR. TO VIEW THE MOST ACCURATE DATE OF ISSUE, REVIEW THE TITLE PAGE OF THE PUBLICATION. National Institute of Standards and Technology Commerce Department. National Institute of Standards and Technology. 1962 1962 https://www.govinfo.gov/app/details/GOVPUB-C13-7745f726b6445f65bd17ff4f4f07102e https://www.govinfo.gov/content/pkg/GOVPUB-C13-7745f726b6445f65bd17ff4f4f07102e/pdf/GOVPUB-C13-7745f726b6445f65bd17ff4f4f07102e.pdf Puerto Rico Roofing Testing Cullen, William C. creator Cullen, William C. Walton, William W. National Bureau of Standards (U.S.) mdu Gaithersburg, MD U.S. Dept. of Commerce, National Institute of Standards and Technology 1962 monographic 1 online resource text eng William C. Cullen, William W. Walton. 1962. Title from PDF title page. Includes bibliographical references. Mode of access: World Wide Web. Systems requirements: Adobe Acrobat PDF reader. Puerto Rico Roofing Testing http://dx.doi.org/10.6028/NBS.RPT.7489