01621oam 2200421 a 450 991070151130332120120330120449.0(CKB)5470000002419979(OCoLC)776627796(EXLCZ)99547000000241997920120213d1962 ua 0engurbn||||a|a||txtrdacontentcrdamediacrrdacarrierLettuce and its production[electronic resource] /[by Thomas W. Whitaker, E.J. Ryder, and Orin A. Hills]Washington, D.C. :Agricultural Research Service, U.S. Dept. of Agriculture,1962.1 online resource (49 pages) illustrations, mapsAgriculture handbook / United States Department of Agriculture ;no. 221Title from title screen (viewed on Mar. 30, 2012)."Replaces the material formerly contained in U.S. Department of Agriculture Farmers' bulletin 1953, Lettuce varieties and culture."Includes bibliographical references (pages 48-49).LettuceLettuceDiseases and pestsLettuce.LettuceDiseases and pests.Whitaker Thomas W(Thomas Wallace),1904-1993.1402606Ryder Edward J.1929-1402607Hills Orin A.1903-1390545United States.Agricultural Research Service.OCLCEOCLCEGPOBOOK9910701511303321Lettuce and its production3473487UNINA