000			00986nam a22002777a 4500
001			001520
003			OSt
005			20140930013431.0
008			140930b xxu||||| |||| 00| 0 eng d
020			_a9781856973106
040			_cAIIAS ACADEMY LIBRARY
082			_a502 I999t 1995
100		1	_aParker, Steve.
110		1	_aI wonder why.
245	1	0	_aTunnels are round and other questions about building. _cSteve Parker.
260			_aNew York : _bKingfisher, _c©1995.
300			_a32 p. : _b col. ill. ; _c29 cm.
440			_aI wonder why.
500			_a Includes index.
520			_a Answers a variety of questions about structural engineering such as, "What's the quickest way to knock down a building?", "How much can a crane lift?", and more.
650			_a Structural engineering -- Miscellanea.
650			_a Buildings -- Miscellanea.
650			_aEarthmoving machinery -- Miscellanea.
942			_2ddc _cCIRC
999			_c1131 _d1131