TY - GEN AU - Gurao, Rajendra G TI - Sampling methods SN - 9789384247935 U1 - 519.52 PY - 2016/// CY - Kanpur : PB - Chandralok Prakashan, KW - Environmental sampling KW - Sampling KW - Cluster sampling KW - Survey sampling methods N1 - It Includes bibliographical references and index ER -