00282nam a2200121Ia 450000500170000000800410001704100080005808200130006610000160007924500370009526000190013230000090015120260720174718.0260720s1965    xx            000 0 und d  aeng  a500 DAVS  aDavis Ira C  aScience 3 discovery and progress  aNew Yorkc1965  a504p