Cellulosic ethanol hits roadblocks.
Roberta
R
Kwok
D001674:Bioelectric Energy Sources / Q000191:economics* / Q000639:trends*; D002482:Cellulose / Q000737:chemistry* / Q000191:economics / Q000378:metabolism; D000431:Ethanol / Q000737:chemistry / Q000191:economics* / Q000302:isolation & purification* / Q000378:metabolism; D005740:Gases / Q000378:metabolism; D007221:Industry / Q000191:economics / Q000639:trends; D038622:Internationality; D013997:Time Factors; D014481:United States; D003313:Zea mays / Q000737:chemistry
D005740:Gases; D000431:Ethanol; D002482:Cellulose