If a comparatively harmless pest destroys pests which are more harmful than itself, it is desirable to consider the injuries which it inflicts as well as the services which it renders.


The History of Science as an Error Breeder, The Scientific Monthly, Volume XII, Number 5, May, 1921 (p. 439)


If a comparatively harmless pest destroys pests which are more harmful than itself, it is desirable to consider the injuries which it inflicts as...

If a comparatively harmless pest destroys pests which are more harmful than itself, it is desirable to consider the injuries which it inflicts as...

If a comparatively harmless pest destroys pests which are more harmful than itself, it is desirable to consider the injuries which it inflicts as...

If a comparatively harmless pest destroys pests which are more harmful than itself, it is desirable to consider the injuries which it inflicts as...