Verma, B.P creator text Delhi Khanna Publishers 1991 monographic http://books.google.com.pk/books/about/Problems_in_Soil_Mechanics_and_Foundatio.html?id=z5nFHgAACAAJ&redir_esc=y http://books.google.com.pk/books/about/Problems_in_Soil_Mechanics_and_Foundatio.html?id=z5nFHgAACAAJ&redir_esc=y