000			00632nam a22001577a 4500
008			230428b |||||||| |||| 00| 0 eng d
020			_a9027702071
040			_aNational Science Library _cNational Science Library
080			_a521.7(082.2) _bL2
245			_aMotion, evolution of orbits, and origin of comets: _bSymposium no. 45, held in Leningrad, U. S. S. R., August 4-11, 1970 _c/ International Astronomical Union
260			_aDordrecht: _bSymposium no. 45, held in Leningrad, U. S. S. R., August 4-11, 1970, _c1972
300			_axxiii, 521p.
650			_aScience
700			_aChebotarev, G A (Ed.)
942			_2udc _cSYM
999			_c24910 _d24910