000 00285nam a2200121Ia 4500
999 _c730
_d730
003 OSt
005 20210127123550.0
008 160316s1982 xxu||||| |||| 00| 0 eng d
100 _aYsung, Erl Fiske
245 _aPrinciples & Techniques of Social Studies
250 _a4th
942 _2ddc
_cWOB