Nature, Volume 253Sir Norman Lockyer Macmillan Journals Limited, 1975 |
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Página 50
... species being present , or , possibly , a time - averaged distribution of species whose inter- conversion time ( by ẞ ring rotation ) is very fast . The spectrum of TP in acidic ethanol , however , shows doubling of all the proton peaks ...
... species being present , or , possibly , a time - averaged distribution of species whose inter- conversion time ( by ẞ ring rotation ) is very fast . The spectrum of TP in acidic ethanol , however , shows doubling of all the proton peaks ...
Página 91
... species in that stand he was able to ordinate species with respect to their ecological require- ments and in this way learn something of the species and consequently of the nature of the community . It is some- thing akin to this ...
... species in that stand he was able to ordinate species with respect to their ecological require- ments and in this way learn something of the species and consequently of the nature of the community . It is some- thing akin to this ...
Página 314
... species density since it allows the invasion of species characteristic of unstable habitats . Also , local air pollution may deplete the epiphyte flora of even an ancient forest . A more hopeful approach to the assessment of past forest ...
... species density since it allows the invasion of species characteristic of unstable habitats . Also , local air pollution may deplete the epiphyte flora of even an ancient forest . A more hopeful approach to the assessment of past forest ...
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London Ltd 1974 2 50 | 2 |
72 Ft Harcourt Brace Jovanovich Publishers 1974 18 50 | 18 |
PrenticeHall Inc 1974 Cleveland Ohio CRC Press Inc Oxford Blackwell Scientific Publications 1974 | 119 |
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