Some distributional and ecological records of Kansas reptiles.
An ecological survey of reptiles in parts of northwestern Texas.
His method was essentially that which is now styled "Ecological."
We can find no place in the Ecological Balance for this species.
Not that any of us were interested at first in it as an ecological marvel, of course.
Why, even some of my people are talking about ecological side-effects.
The second part of the study, now in preparation, deals with the ecological and historical geography of the herpetofauna.
No details of ecological interest are given and there is no mention of natives.
An ecological problem has been worked out along the above line to a larger extent than generally supposed.
Ecological and economic relations of the crow with special reference to Illinois.