000 004670000a22001450004500
008 151207t1974 xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a69.001.3:691.11
_bT5
942 _cBK
100 _aWalker, P.G.
110 _aTimber Research and Development Association
245 _aVisual stress grading of timber explanation and practical interpretation of the visual grading elements of BS 4978
260 _aBucks
_bTRADA
_c1974
300 _a31p.: ill.
999 _c139128
_d139128