TY - BOOK AU - Neemisha TI - Molecular characterization and diversity analysis of diazotrophs isolated from wheat cropping system of Punjab U1 - CD PY - 2012/// CY - Ludhiana PB - PAU KW - Soil samples were collected from central plain, submonta KW - Soil samples were collected from central plain, submontane undulating and flood plain regions of Punjab and ER -