000 00267nam a2200109Ia 4500
008 200302s9999 xx 000 0 und d
100 _aRobert B. Bechtel
245 _aEnclosing Behavior
260 _bDowden Hutchinson & Riss, Inc.
260 _c1977
300 _a192 P.,
999 _c2288
_d2288