A monograph of the British marine annelids - M'Intosh, William Carmichael, 1838 -1931 (The Ray society, 1915)

A monograph of the British marine annelids - M'Intosh, William Carmichael, 1838 -1931 (The Ray society, 1922)

A monograph of the British nudibranchiate Mollusca : with figures of all the species - Ray Society. (Printed for the Ray Society, 1845)

A monograph of the British Spongiadæ - Norman, Alfred Merle, 1831 -1918 (Pub. for the Ray society by R. Hardwicke, 1882)

A monograph of the British Spongiadæ - Norman, Alfred Merle, 1831 -1918 (Pub. for the Ray society by R. Hardwicke, 1864)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1921)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1931)

A monograph of the existing crinoids - Clark, Austin Hobart, 1880 -1954 (Govt. Print. Off, 1967)

A monograph of the free and semi-parasitic Copepoda of the British islands - Brady, George Stewardson, 1832 -1921 (Ray Society, 1878)

A monograph of the free and semi-parasitic Copepoda of the British islands - Brady, George Stewardson, 1832 -1921 (Ray Society, 1880)

A monograph of the free and semi-parasitic Copepoda of the British islands - Brady, George Stewardson, 1832 -1921 (Ray society, 1878)

A monograph of the free and semi-parasitic Copepoda of the British islands - Brady, George Stewardson, 1832 -1921 (Ray society, 1880)

A monograph of the fresh-water polyzoa : including all the known species, both British and foreign / by George James Allman - Allman, George James, 1812 -1898 (Ray Society, 1856)

A monograph of the gymnoblastic or tubularian hydroids / by George James Allman - Allman, George James, 1812 -1898 (1871)

A monograph of the recent British Ostracoda - Brady, George Stewardson, 1832 -1921 (Printed by Taylor and Francis, 1868)

A monograph of the Silurian fossils of the Girvan district in Ayrshire with special reference to those contained in the "Gray collection" - Nicholson, Henry Alleyne, 1844 -1899 (W. Blackwood, 1878)

A monograph on the sub-class Cirripedia, with figures of all the species - Darwin, Charles, 1809 -1882 (Ray society, 1851)

Monographs on the Isopods of North America - Richardson, Harriet (Govt. print. off, 1905)

Monthly microscopical journal: transactions of the Royal Microscopical Society, and record of histological research at home and abroad - Royal Microscopical Society (Great Britain) (R. Hardwicke, 1872)

Morphologie und Biologie der Algen - Oltmanns, Friedrich, 1860 -1945 (Fischer, 1922)

Morphologie und biologie der algen - Oltmanns, Friedrich, 1860 -1945 (G. Fischer, 1904)

Morphologie und Biologie der Algen - Oltmanns, Friedrich, 1860 -1945 (G. Fischer, 1922)

Morphologie und biologie der algen - Oltmanns, Friedrich, 1860 -1945 (G. Fischer, 1905)