Modern nature study : a first book for use in Canadian schools - Silcox, S. (Morang & Co, 1902)

Moluscos - Gay, Claudio, 1800 -1873 (1854)

Le monde de la mer - Frédol, Alfred. (L. Hachette et cie, 1865)

Le monde de la mer - Moquin-Tandon, Alfred, 1804 -1863 (L. Hachette, 1866)

Le monde de la mer - Frédol, Alfred. (L. Hachette & Cie, 1866)

Le Monde des papillons : promenade à travers champs - Depuiset, Alphonse (J. Rothschild, 1867)

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1903)

Monitore zoologico italiano - Unione zoologica italiana. (Instituto anatomico della R. Università di Siena, 1916)

A monograph of Christmas Island (Indian Ocean) - British Museum (Natural History). Department of Geology. (Printed by order of the Trustees, 1900)

A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum - British Museum (Natural History). Department of Botany. (Printed by Order of the Trustees, 1894)

A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum - British Museum (Natural History). Department of Botany. (Printed by Order of the Trustees, 1911)

A monograph of the Eocene bivalves of England - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1861)

Monograph of the fossil Mammalia of the Mesozoic formations - Owen, Richard, 1804 -1892 (Printed for the Palæontographical society, 1871)

A monograph of the fossil Reptilia of the Liassic formations - Owen, Richard, 1804 -1892 (Printed for the Palæontographical society, 1881)

Monograph of the fossil Reptilia of the London clay, and of the Bracklesham and other Tertiary beds - Owen, Richard, 1804 -1892 (Printed for the Palaeontographical society, 1848)

Monograph of the fossil Reptilia of the London clay, and of the Bracklesham and other Tertiary beds - Owen, Richard, 1804 -1892 (Printed for the Palaeontographical society, 1849)

Monograph of the fossil Reptilia of the London clay, and of the Bracklesham and other Tertiary beds - Owen, Richard, 1804 -1892 (Printed for the Palaeontographical society, 1850)

Monograph of the fossil Reptilia of the London clay, and of the Bracklesham and other Tertiary beds - Owen, Richard, 1804 -1892 (Printed for the Palaeontographical society, 1880)

A monograph of the genus Casuarius - Rothschild, Lionel Walter Rothschild, Baron, 1868 -1937 (Zoological Society of London, 1900)

A monograph of the Mycetozoa, being a descriptive catalogue of the species in the herbarium of the British Museum. Illustrated with seventy-eight plates and fifty-one woodcuts - British Museum (Natural History). Department of Botany. (Printed by Order of the Trustees, Sold by Longmans [etc.], 1894)

A monograph of the Mycetozoa : a descriptive catalogue of the species in the Herbarium of the British Museum - British Museum (Natural History). Department of Botany. (Printed by order of the Trustees of the British Museum, 1911)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1849)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1850)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1851)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1853)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1856)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1860)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1862)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1863)

Monograph of the Palaeontographical Society - Palaeontographical Society (Great Britain) (Printed for the Palaeontographical Society, 1864)