000 00453cam a2200193ua 4500
020 _c50.00
041 _aeng
_h
082 _a778.31
_bALL/PH
100 _aAllen, Roy M .
245 _aPhotomicrography /
_cRoy M Allen.
_hTextual Documents
250 _a2 /
_b.
260 _aToronto :
_bD Van nostrand co ,
_c1959.
300 _a441 ; .
365 _a50.00
500 _a**Reference
504 _a
942 _cBK
999 _c7895
_d7895