Monographie des Campanulées - Candolle, Alphonse de, 1806 -1893 (Chez Mme. Veuve Desray, 1830)

Monographie des Cirrhipèdes ou Thécostracés - Gruvel, A. (Abel), 1870 -1941 (Masson et cie, 1905)

A monography of the North American histeroides - LeConte, John L. (John Lawrence), 1825 -1883 (s.n, 1845)

The Monthly microscopical journal : transactions of the Royal Microscopical Society, and record of histological research at home and abroad - Royal Microscopical Society (Great Britain) (Robert Hardwicke, 1875)

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, 1875)

Morphologische Arbeiten (G. Fischer, 1891)

Morphologische Arbeiten (G. Fischer, 1894)

Morphologische Arbeiten (G. Fischer, 1896)

Morphologische Arbeiten (G. Fischer, 1897)

Morphologische Arbeiten (G. Fischer, 1898)

Morphologisches Jahrbuch (Wilhelm Engelmann, 1876)