TY - GEN AU - HOUBA, V J G AU - REEUWIJK, L P VAN TI - GUIDELINES FOR QUALITY MANAGEMENT IN SOIL AND PLANT LABORATORIES U1 - 631.4 REE/GU CY - DELHI, DAYA PUBLISHING HOUSE KW - FACILITY AND SAFETY KW - ORGANIZATIONAL AND PERSONNEL KW - STANDARD OPERATING PROCEDURES ER -