A group of polycyclic compounds closely related biochemically to TERPENES. They include cholesterol, numerous hormones, precursors of certain vitamins, bile acids, alcohols (STEROLS), and certain natural drugs and poisons. Steroids have a common nucleus, a fused, reduced 17-carbon atom ring system, cyclopentanoperhydrophenanthrene. Most steroids also have two methyl groups and an aliphatic side-chain attached to the nucleus. (From Hawley's Condensed Chemical Dictionary, 11th ed)
Catawba Indians -- History -- 16th century : The Juan Pardo expeditions : explorations of the Carolinas and Tennessee, 1566-1568 / Charles Hudson ; with documents relating to the Pardo expeditions transcribed, translated, and annotated by Paul E. Hoffman ; afterword by David G. Moore, Robin A, Beck, Jr., and Christopher B. Rodning
Catawba (Indiens) -- Histoire. : The Indians' new world : Catawbas and their neighbors from European contact through the era of removal / James H. Merrell
1991
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Catawba pottery -- Themes, motives : Catawba Indian pottery : the survival of a folk tradition / Thomas John Blumer ; with a foreword by William Harris
Catch crops : Catch crops and sugar beet variety types at Heterodera schachtii infested fields - nematode-host interactions and options for nematode control
2015
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Catch crops -- Germany : Catch crops and sugar beet variety types at Heterodera schachtii infested fields - nematode-host interactions and options for nematode control