00722nam a2200229Ia 4500 IN-BaIIA 211028s9999 xx 000 0 eng d 3-540-97070-3 IIA Library 52-423 SCH Schneider, P. 18096 Gravitational lenses P. Schneider, J. Ehlers and E. E. Falco Berlin Springer-Verlag 1992 xiii, 560p. Atronomy and astrophysics library Astronomy and astrophysics thesaurus Black holes 7728 Gravitational lenses 13648 Ehlers, J. 18097 Falco, E. E. 18098 BK 10612 10612 0 0 0 0 BAN BAN GEN 1993-03-10 2846.20 1 52-423/ SCH 11523 2026-01-13 2026-01-13 2846.20 1993-03-10 BK Rs. 2846.20