00347 a2200121 4500082001600000245002900016260006900045300002000114440003300134650003100167650001100198650001600209 a633.51bCOT aCotton ginners handbook  aWashinagtonbUnited States Department of Agriculturec1977g1977 aiii,110p.c26cm aAgriculture handbook No. 503 aField and plantation crops aCotton aFiber crops