| 4066 | 2760 | Dobroslava Menclova | Statni Hrad Karlstejn [State Castle Karlstejn] | ? | B/27 | Karlst |
| 4068 | 7809 | Eric Mercer | English vernacular houses : a study of traditional farmhouses and cottages | 1975 | B/01.3 | Mercer |
| 4070 | 7719 | Henry C Mercer | Ancient carpenters' tools together with lumbermen's, joiners' and cabinet makers' tools in use in the eighteenth century | 1975 | E/33.22 | Mercer |
| 4072 | 7757 | Ian Mercer | Dartmoor National Park : the work of the Authority 1985-86 | 1986 | E/16.5 | Nation |
| 4073 | 3683 | edited by A L Merson | The third book of remembrance of Southampton 1514-1602 : V2 (1540-1573) | 1955 | E/64 | Merson |
| 4074 | 5641 | Elizabeth Merson | Once there was ?.. The village school | 1979 | E/66.1 | Merson |
| 4075 | 8087 | Metal Agencies Co Ltd | Catalogue N86 | 1954 | B/01.7 | Metal |
| 4076 | 4285 | C C Metcalfe | Practical electric wiring for lighting installations | 1905 | WCP | Metcal |
| 4077 | 1226 | L Metcalfe, J Vince | Discovering canals : guide for the motorist | 1968 | E/35.2 | Metcal |
| 4078 | 245 | Metropolitan Water Board | London's water supply 1903-1953 : review of the work of the Metropolitan Water Board | 1953 | WCP | Metrop |
| 4079 | 6593 | Esther Meynell | Cottage tale | 1946 | E/56 | Meynel |
| 4080 | 25 | Esther Meynell | Sussex | 1947 | E/15 | Sussex |
| 4081 | 7069 | Eleanor Michell | Emergency repairs for historic buildings | 1988 | B/10.0 | Michel |
| 4083 | 5548 | Michelmersh Brick Co | Trade publication on bricks | | B/10.0 | Michel |
| 4086 | 6966 | edited by D J H Michelmore | A current bibliography of vernacular architecture Vol.1 1970-1976 | 1979 | B/00.2 | Michel |
| 4087 | 5479 | Peter Michelson | Ti Huse Pa Frilandsmuseet [Two houses in the open air museum] | 1965 | M/08 | Denmar |
| 4090 | 4286 | G A T Middleton | The drainage of town & country houses | 1908 | WCP | Middle |
| 4091 | 8202 | J Middleton Murry | Heaven and earth | 1938 | E/56 | Middle |
| 4092 | 7025 | Midhurst Town Council | Midhurst & district official guide | ? | E/15 | Sussex |
| 4093 | 3028 | Roy Midmer | English mediaeval monasteries 1066-1540 : a summary | 1979 | B/26 | Midmer |
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