Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1956)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1957)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1959)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1961)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1968)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1965)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1966)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1967)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1968)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1969)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1970)

Smithsonian year - Smithsonian Institution (Smithsonian Institution, 1971)

Smithsonian year : annual report of the Smithsonian Institution for the year ended Sept. 30 ... - Smithsonian Institution (For sale by the Supt. of Docs., U.S. G.P.O, 1982)

Smithsonian year : annual report of the Smithsonian Institution for the year ended Sept. 30 ... - Smithsonian Institution (For sale by the Supt. of Docs., U.S. G.P.O, 1983)

Smithsonian year : annual report of the Smithsonian Institution for the year ended Sept. 30 ... - Smithsonian Institution (For sale by the Supt. of Docs., U.S. G.P.O, 1984)

Smithsonian year ... supplement : chronology and appendices - Smithsonian Institution (Smithsonian Institution, 1985)

Smithsonian year ... supplement : chronology and appendices - Smithsonian Institution (Smithsonian Institution, 1987)

Smithsonian year ... supplement : chronology and appendices - Smithsonian Institution (Smithsonian Institution, 1989)

Smithsonian year ... supplement : chronology and appendices - Smithsonian Institution (Smithsonian Institution, 1990)

The social insects - Richards, Owain Westmacott, 1901 -1984 (Macdonald, 1953)

The social insects : their origin and evolution - Wheeler, William Morton, 1865 -1937 (K. Paul, Trench, Trubner, 1928)