"gupta, b l. "
road railway and tunnel engineering: / b.l. gupta - 1 ed. - india : standard 1978. - "xii, 200p.; 21 cm."
road cnstruction--
625. gup
road railway and tunnel engineering: / b.l. gupta - 1 ed. - india : standard 1978. - "xii, 200p.; 21 cm."
road cnstruction--
625. gup