000 002700000a22001450004500
596 _aI
245 1 0 _aCIRCULAR
260 _bPennsylvania State University
310 _aIrr.
041 0 _aEn
593 _a04-06-2001
590 _gUSA
942 _cCR
999 _c130161
_d130161