Math Handbook for Water System Operators: Math Fundamentals and Problem Solving Autor Bob Larsen 21 noi 2006 Paperback Preț: 243.58 lei 43-57 zile
Math Handbook for Wastewater Treatment Plant Operators: Math Fundamentals and Problem Solving Autor Bob Larsen 24 mar 2010 Paperback Preț: 311.94 lei 43-57 zile