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Asa Gray - Why is it not just as likely that there...
Why is it not just as likely that there were as many small general nearly at first as now, and as great a disproportion in the number of their species? (Asa Gray)

Why is it not just as likely that there were as many small general nearly at first as now, and as great a disproportion in the number of their species?

Asa Gray

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disproportion general great likely now number small species

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