TY  - BOOK
AU  - Mehra, Naveen
TI  - Vigyan-shikshan kee naee vidhiyan: : samanyan vigyaan-shikshan chattan, mitti or khanij (Hindi)
U1  - 375.5 MN:S 
PY  - 1999///
CY  - Delhi
PB  - : Janavanee Prakashan
KW  - Rock--Clay--Minerals
ER  -