TY - BOOK AU - Sehgal, J TI - Textbook of pedology: concepts and applications SN - 9789327284058 U1 - 631.4 PY - 2018/// CY - Ludhiana PB - Kalyani Publishers KW - Soil concept and definition KW - Weatherinig of rocks and minerals KW - Soil formation KW - Processes in pedogenesis ER -