000 00284nam a22001217a 4500
082 _a500 LEY-W
100 _aWilly Ley
245 _aWatchers of the Skies
260 _aLondon
_bSidgwick & Jackson Ltd
_c1964
300 _a528p.
_bill.
_c22cm.
650 _aScience
942 _2ddc
_cBOOKS
999 _c57861
_d57861