The Observational Method in Civil Engineering: Minimising Risk, Maximising Economy by Alan Powderham (Author), Anthony O'Brien (Author) 1st Edition by Alan Powderham (Author), Anthony O'Brien (Author) ISBN-10: 0367361647, 0367361655 ISBN-13: 978-0367361648, 978-0367361655 ASIN: B08HR4WWLY Share Get link Facebook Twitter Pinterest Email Other Apps Share Get link Facebook Twitter Pinterest Email Other Apps