000			00474nam a2200181Ia 4500
008			160330s9999||||xx |||||||||||||| ||und||
040			_aCentral Library-NITS
041			_aEnglish
082			_a516.183 _bLYU
100			_aLyusternik, L. A.
245		4	_aThe shortest lines variational problems _cby L. A. Lyusternik
260			_aMoscow _bMir _c1976
300			_a103p. :ill.
650			_aGeodesic lines
650			_aLine geometry
650			_aRefrection curve
942			_cBK
999			_c2028 _d2028