Science, Том 72John Michels (Journalist) American Association for the Advancement of Science, 1883 Since Jan. 1901 the official proceedings and most of the papers of the American Association for the Advancement of Science have been included in Science. |
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... liverworts , probably resemble pretty closely the first land plants . These are small plants of very simple structure , lying flat on the ground , to which they are fastened by delicate roots . Structurally some of these liverworts are ...
... liverworts , probably resemble pretty closely the first land plants . These are small plants of very simple structure , lying flat on the ground , to which they are fastened by delicate roots . Structurally some of these liverworts are ...
Стр. 182
... liverworts , however , the embryo is divided into an upper sporogenous region , and a basal sterile region which later forms the foot , and a more or less conspicuous stalk con- necting the foot and the sporogenous region , which ...
... liverworts , however , the embryo is divided into an upper sporogenous region , and a basal sterile region which later forms the foot , and a more or less conspicuous stalk con- necting the foot and the sporogenous region , which ...
Стр. 325
... liverworts and lycopod there can be no doubt that the generalized liverworts , not the specialized mosses , gave origin to the next plant division . Among animals , also , specialization stops progress . Neither the intelligent and ...
... liverworts and lycopod there can be no doubt that the generalized liverworts , not the specialized mosses , gave origin to the next plant division . Among animals , also , specialization stops progress . Neither the intelligent and ...
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B Mosquito Vectors of Experimental Yellow | 1 |
Polar Exploration I BowMAN 439 | 13 |
Sudan III Behavior of E H MACARTHUR | 14 |
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