00291nam a22000977a 4500082001600000100001600016245004200032260006700074300003300141650001900174  aF B517 19601 aBerna, Paul1 aThreshold of the stars /cPaul Berna.  aEau Claire, Wisconsin [U.S.] :bE.M. Hale and Company,cc1960.  a176 p. :bsome ill. ; 20 cm.14aStarsxFiction