000 00271 a2200121 4500
082 _a627.8
_bUn3d
245 1 _aDAMS AND CONTROL WORKS
260 _aWashington
_bU. S. Govt. Print Off.
_c1954
300 _a1 v.
650 _aDams
964 _gCIRC
997 _a78781 s C
999 _c454139
_d454139