000 nam a22 7a 4500
999 _c14422
_d14420
001 26731
003 OSt
005 20200824131709.0
008 200824b xxu||||| |||| 00| 0 eng d
020 _a000000
040 _bEnglish
_cDDC
082 _a550
100 _4Clark, Sydney P.
245 _aStructure of the earth
_cSydney P. Clark
260 _aEnglewood Cliff, New Jersey :
_bPrentice - Hall, INC.,
_c1971.
300 _axi, 131 p. :
_bill. ;
_c23 cm.
500 _aIncludes index.
942 _2ddc
_cCIRC