The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 149
... separate metallic copper from the substances with which it is associated in copper ores , smelting of matte or electrolytic techniques may be employed . Sometimes copper is recovered from scrap . Matte smelting and converting . The ...
... separate metallic copper from the substances with which it is associated in copper ores , smelting of matte or electrolytic techniques may be employed . Sometimes copper is recovered from scrap . Matte smelting and converting . The ...
Page 312
... separate ; in the cirripedes and Armadillidium in some parasitic isopods , however , hermaphroditism Leptostraca is the rule , and isolated instances occur in other groups , visored shrimp especially among decapods . Parthenogenesis ...
... separate ; in the cirripedes and Armadillidium in some parasitic isopods , however , hermaphroditism Leptostraca is the rule , and isolated instances occur in other groups , visored shrimp especially among decapods . Parthenogenesis ...
Page 825
... separate family , Stomoxyidae ; tsetse fly Glossina , confined aspect of housefly biology . More specialized references on to Africa , peculiar structurally and biologically , sometimes classification may be found in W. HENNIG , “ Die ...
... separate family , Stomoxyidae ; tsetse fly Glossina , confined aspect of housefly biology . More specialized references on to Africa , peculiar structurally and biologically , sometimes classification may be found in W. HENNIG , “ Die ...
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activity American animals appear areas authority become body called cause cells central century charge common complex conservation consists constant constitution consumer contain continental continued copper cosmic rays countries court crime criminal Crusade direct early effect electron elements energy England established Europe evidence example exist fact field force ground groups House important increase individual industrial involved Italy known land later less letters limited living major material means measure ment metal natural occur organic original particles particular party percent period person play political population position present problems protection reefs region remains result rule social South species structure theory tion United usually various