000 00253nam a22001097a 4500
082 _a621.824 HEL'O
100 _aOXFORD UNIVERSITY PRESS
_959315
245 _aHELICAL SPRINGS
260 _aOXFORD
_bOXFORD UNIVERSITY
_c1965
300 _a24P
942 _cBK
999 _c583718
_d583718