Mahajan, G. (1995). Ground water surveys and investigation. Ashish.
Dyfyniad Arddull ChicagoMahajan, Gautam. Ground Water Surveys and Investigation. New Delhi: Ashish, 1995.
Dyfyniad MLAMahajan, Gautam. Ground Water Surveys and Investigation. Ashish, 1995.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.