...Possibly bombing, or a gas of some sort—Idon't know... 
Various 「Astounding Stories, August, 1931」
...About us were a dozen bombing planes, andabout fifty transports, carrying a battalion of marines...
Various 「Astounding Stories of Super-Science September 1930」
...Have the bombing crews stand by for orders...
Various 「Astounding Stories of Super-Science September 1930」
...Meanwhile the news was spreadby radio that the headquarters of the Invisible Emperor had beenlocated, and that a strong bombing squadron was being dispatched todestroy it...
Various 「Astounding Stories of Super-Science, October, 1930」
...Level off for bombing from five hundredfeet...
Charles Willard Diffin 「Two Thousand Miles Below」
...With hands that trembled a little, I think, I drew forth the little vialof gleaming red metal, while the bombing crew watched me curiously...
Various 「Astounding Stories of Super-Science July 1930」
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