Author
Board of Agriculture (Great Britain)
2
Hassall, Charles
2
Howell, David W
2
Muir, Angela Joy, 1979-
2
Angerstein, R. R (Reinhold Rücker)
1
Angerstein, R. R (Reinhold Rücker)
1
Berg, Peter, 1938-
1
Berg, Torsten, -1978
1
Berg, Torsten, 1904-1978
1
Berg, Torsten, 1934-
1
Bohstedt, John, 1943-
1
Great Britain Board of Agriculture
1
Great Britain Board of Agriculture. Pembroke
1
Haagen, Paul Hess
1
Howell, David W., 1940-
1
Ormrod, David
1
Paterson, Daniel, 1738-1825
1
Philadelphia Society for Promoting Agriculture Collection (University of Pennsylvania)
1
Science Museum (Great Britain)
1
Smeeton, Joseph, -1809
1
Taylor & Francis
1