...Bird and Operative Carnes have chosen to pay me a long visit... 
Various 「Astounding Stories, August, 1931」
...Before we leave the subject of Chinamen let us consider anotherrecent factor in the destruction of wild life which is at presentwidely operative in China itself...
William T. Hornaday 「Our Vanishing Wild Life」
...If otherwise, a special operative procedure will be necessary...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
... And then, to suppose the impossible: a Wasp discovers by chance the operative method which will be the saving attribute of her race...
J. Henri Fabre 「More Hunting Wasps」
...Its wonderful operative method is the necessary result of the victim's structure...
J. Henri Fabre 「More Hunting Wasps」
...Animals are wise as Nature is wise; they partake,each in its own measure, of that universal intelligence,or mind-stuff, that is operative in all things—inthe vegetable as well as in the animal world...
John Burroughs 「Ways of Nature」
...“Exactly!” said the operative...
Various 「Astounding Stories of Super-Science January 1931」
...“Yes, yes!” he agreed, and again he looked oddly at his operative...
Various 「Astounding Stories of Super-Science January 1931」
...The operative brought his distant gaze back to the room and the man across from him...
Various 「Astounding Stories of Super-Science January 1931」
...But despite all this activity, it was with a disappointedface that Operative Carnes sought the doctor in the morning...
Various 「Astounding Stories, May, 1931」
...Before each operative rosethe serried hundreds of pearl buttons, dim lit, clicking in and outunder the busy fingers...
Various 「Astounding Stories, July, 1931」
...The observations of the secretservice operative had been correct...
Various 「Astounding Stories of Super-Science, March 1930」
...Followed by the secret service operative, the doctor made his wayalong the edge of the hollow...
Various 「Astounding Stories of Super-Science, October, 1930」
...The operative nodded and walked a few yards up the hill and made hisway slowly forward...
Various 「Astounding Stories of Super-Science, October, 1930」
...At the back of the cave stood Operative Carnes, an automaticpistol in his hand...
Various 「Astounding Stories of Super-Science, October, 1930」
...The operative looked up in surprise...
Various 「Astounding Stories of Super-Science April 1930」
...You were notacting, Señor, as a secret service operative in your attempt to help myfather...
Various 「Astounding Stories of Super-Science July 1930」
...The instrument was still operative...
Raymond King Cummings 「Wandl the Invader」
...Bird, of theBureau of Standards; Operative Carnes, of the United States SecretService; and Lieutenant McCready, of the United States Navy...
Sterner St. Paul Meek 「The Solar Magnet」
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