000 00429pam a2200097a 44500
040 _aP K Kelkar Library, IIT Kanpur
100 _aYokel, Felix Y.
245 0 _aNBS building science series 127
_brecommended technical provisions for construction practice in shoring and sloping of trenches and excavations
_cFelix Y. Yokel
260 _aUsa
_bU. S. Deptt. Of Commerce [National Bureau Of Standards]
_c1980
997 _aTR7252 C
999 _c406902
_d406902