02061oam 2200637I 450 991071160520332120181219133254.0(CKB)5470000002486014(OCoLC)51906960(EXLCZ)99547000000248601420030324d1997 ua 0engurmn|||||||||txtrdacontentcrdamediacrrdacarrierIntroduction to microbiotic crusts /Roxanna JohnstonWashington, D.C. :United States Department of Agriculture, Natural Resources Conservation Service, Soil Quality Institute, Grazing Lands Technology Institute,1997.1 online resource (15 pages) color illustrations"This document was written by Roxanna Johnston, botanist, and includes the comments of numerous reviewers"--Page 2."July 1997."Includes bibliographical references (pages 13-15).Crust vegetationWest (U.S.)Soil crustingWest (U.S.)Soil microbiologyWest (U.S.)Soil ecologyWest (U.S.)Crust vegetationfastSoil crustingfastSoil ecologyfastSoil microbiologyfastUnited States, WestfastCrust vegetationSoil crustingSoil microbiologySoil ecologyCrust vegetation.Soil crusting.Soil ecology.Soil microbiology.Johnston Roxanna1386677Soil Quality Institute (U.S.),Grazing Lands Technology Institute (U.S.),GISGISOCLCQOCLCFOCLCQOCLCOOCLCQAGLOCLGPOBOOK9910711605203321Introduction to microbiotic crusts3435777UNINA