9781846231896 | 4 spi edition (Imray Laurie Norie & Wilson Ltd, July 18, 2009), cover price $25.95 |
About this edition: Andrew Hunter Blair's guide to the Middle Level and the waterways that connect the river Great Ouse and the Nene has been revised and improved with the addition of detailed mapping of each section of river in the same style as his other waterway maps.