RAILWAY ENG MAN VOL 4 CH 16 PT 5-2005 MANUAL FOR RAILWAY ENGINEERING - VOLUME 4 - CHAPTER 16 - PART 5 - ECONOMICS AND LOCATION OF DEFECT DETECTOR SYSTEMS
2006RAILWAY ENG MAN VOL 4 CH 16 PT 5-2006 MANUAL FOR RAILWAY ENGINEERING - VOLUME 4 - CHAPTER 16 - PART 5 - ECONOMICS AND LOCATION OF DEFECT DETECTOR SYSTEMS
2005RAILWAY ENG MAN VOL 4 CH 16 PT 5-2005 MANUAL FOR RAILWAY ENGINEERING - VOLUME 4 - CHAPTER 16 - PART 5 - ECONOMICS AND LOCATION OF DEFECT DETECTOR SYSTEMS
2004RAILWAY ENG MAN VOL 4 CH 16 PT 5-2004 MANUAL FOR RAILWAY ENGINEERING - VOLUME 4 - CHAPTER 16 - PART 5 - ECONOMICS AND LOCATIONOF DEFECT DETECTOR SYSTEMS
2003RAILWAY ENG MAN VOL 4 CH 16 PT 5-2003 MANUAL FOR RAILWAY ENGINEERING - VOLUME 4 - CHAPTER 16 - PART 5 - ECONOMICS AND LOCATIONOF DEFECT DETECTOR SYSTEMS