"gupta, r b. "
social studies: / r.b. gupta - 1 ed. - india : satya prakashan 1987. - "vii, 136p.; 21 cm."
hard cover
H62 / .G87 1987
social studies: / r.b. gupta - 1 ed. - india : satya prakashan 1987. - "vii, 136p.; 21 cm."
hard cover
H62 / .G87 1987