Hal Clement 
Small Changes [EPUB ebook] 

Moon dust that comes alive in an attempt to destroy the invaders from Earth . . .A diabolical snare set on a fiery star for a desperate inter-galactic fugitive . . . An alien ‘primitive’ life form that has the last laugh on condescending space-men . . . This is a perverse Pandora’s box of startling surprises and deadly perils – nine breakthrough stories by one of the most exciting and imaginative talents of SF