ScienceJohn Michels (Journalist) 1946 |
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Page 2
... species are gymnosperms . Between the angiosperms and the gymnosperms there are fundamental differences in factors that affect crossability and fertility and hence the ease with which hybrids and their progenies can be produced in ...
... species are gymnosperms . Between the angiosperms and the gymnosperms there are fundamental differences in factors that affect crossability and fertility and hence the ease with which hybrids and their progenies can be produced in ...
Page 199
... species are lumped to- gether , and it is impossible to deduce the packing characteristics of the various species and the relations between the framework and the metallic atoms . If , however , one separates the total density into the ...
... species are lumped to- gether , and it is impossible to deduce the packing characteristics of the various species and the relations between the framework and the metallic atoms . If , however , one separates the total density into the ...
Page 494
... ( species and subspecies ) of 111 full species which belong to 57 genera of 23 families of 6 orders " are treated . The treatment of each subspecies is under six headings : scientific name , common name , synonymy , dis- tribution ...
... ( species and subspecies ) of 111 full species which belong to 57 genera of 23 families of 6 orders " are treated . The treatment of each subspecies is under six headings : scientific name , common name , synonymy , dis- tribution ...
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