Technical memorandum.
National Institute of Agricultural Engineering (Great Britain)
Silsoe,
[1949-1956]
Reproduced from typewriting.
Wanting: 3-6, 10, 18, 20, 25-27, 29, 31, 34, 39, 41, 44, 48-51, 53, 55, 59, 61, 65, 67-68, 73-81, 88-89, 104, 113-114.