000			00531nam a22001817a 4500
005			20151026125923.0
008			090728t xxu||||| |||| 00| 0 eng d
080			_a517.9:512.54 _bPOL
100			_aPoluyanov, Leonid V. _91223
245			_aGroup properties of the acoustic differential equation
300			_axiv, 151p.
700			_aAntonio Aguilar _91249
700			_aMiguel Gonzalez _91250
942			_cBK
260			_aLondon _bTaylor & Francis _c1995 _91224
500			_aBibliog on p 147-148
020			_a0 7484 0280 2
999			_c522 _d522