00328nam a2200121Ia 4500 211209s1984 xx 000 0 und d eng NAN NAND, BRAHMA SPHERICAL HARMONICS AND PARTIAL DIFFERENTIAL EQUATIONS NEW DELHI KEDAR NATH RAM NATH & CO. 1984 168 0 0 0 0 RIT RIT MAT-MAIN 2021-12-31 0 NAN 22594 2021-12-31 00:00:00 2021-12-31 BK 22594 22594