The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 203
... cover about 20 percent , savannas about 40 percent , and deserts about 40 percent . The forested area cannot be ... cover may be divided into six Vegetation groups : ( 1 ) forest , dense , woody growth with virtually no types grass cover ...
... cover about 20 percent , savannas about 40 percent , and deserts about 40 percent . The forested area cannot be ... cover may be divided into six Vegetation groups : ( 1 ) forest , dense , woody growth with virtually no types grass cover ...
Page 499
... covers the field generally ; T. LEVRING , H.A. HOPPE , and O.J. SCHMID , Marine Algae : A Survey of Research and Utili- sation ( 1969 ) , with an extensive bibliography ; and v.J. and D.J. CHAPMAN , The Algae ( 1971 ) , which covers all ...
... covers the field generally ; T. LEVRING , H.A. HOPPE , and O.J. SCHMID , Marine Algae : A Survey of Research and Utili- sation ( 1969 ) , with an extensive bibliography ; and v.J. and D.J. CHAPMAN , The Algae ( 1971 ) , which covers all ...
Page 523
... cover a , then b c covers both b and c . 2. If a covers both b and c , then b and c both cover bc . ( It is understood here that bc . ) Projective geometries . If F is any field ( see below Fields ) or division ring , and if V = Vn + 1 ...
... cover a , then b c covers both b and c . 2. If a covers both b and c , then b and c both cover bc . ( It is understood here that bc . ) Projective geometries . If F is any field ( see below Fields ) or division ring , and if V = Vn + 1 ...
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