The North American cup-fungi (operculates) - Seaver, Fred Jay, 1877 -1970 (The author, 1942)

North American flora - New York Botanical Garden (New York Botanical Garden, 1910)

North American flora - New York Botanical Garden (New York Botanical Garden, 1907)

The North American Pyrenomycetes. A contribution to mycologic botany - Everhart, B. M. (Benjamin Matlack), 1818 -1904 (Ellis & Everhart, 1892)

The North American Pyrenomycetes a contribution to mycologic biology - Everhart, B. M. (Benjamin Matlack), 1818 -1904 (Ellis & Everhart, 1892)

The North British cultivator: a treatise on gardening, agriculture and botany - Macnab, Robert. (J. Dewar and T. Richardson, booksellers, J. & J. Taylor, 1842)

La notarisia : commentarium phycologicum : rivista trimestrale consacrata all studio delle alghe - Wildeman, E. de (Emile), 1866 -1947 (1891)

Note-book of agricultural facts and figures for farmers and farm students - McConnell, Primrose, 1856 - (C. Lockwood, 1897)

Notes from the Royal Botanic Garden, Edinburgh - Royal Botanic Garden, Edinburgh. (H. M. Stationery Off, 1905)

Notes from the Royal Botanic Garden, Edinburgh - Royal Botanic Garden, Edinburgh. (H. M. Stationery Off, 1909)

Notes from the Royal Botanic Garden, Edinburgh - Royal Botanic Garden, Edinburgh. (H. M. Stationery Off, 1925)

Notes on collecting and preserving natural-history objects - Taylor, J. E. (John Ellor), 1837 -1895 (Hardwicke & Bogue, 1876)

Notes on the Lepidoptera of America - Grote, Augustus Radcliffe, 1841 -1903 (Printed by the New York Printing Company, 1867)

Notiser ur Sällskapets pro Fauna et Flora Fennica förhandlingar - Societas pro Fauna et Flora Fennica (Sällskapet pro Fauna et Flora Fennica, 1861)

Notiser ur Sällskapets pro Fauna et Flora Fennica förhandlingar - Societas pro Fauna et Flora Fennica (Sällskapet pro Fauna et Flora Fennica, 1869)

Notiser ur Sällskapets pro Fauna et Flora Fennica förhandlingar - Societas pro Fauna et Flora Fennica (Sällskapet pro Fauna et Flora Fennica, 1871)

Notizen aus dem Gebiete der Natur- und Heilkunde (G.H.S. pr. Landes-Industrie-Comptoir, 1834)

Notizen aus dem Gebiete der Natur- und Heilkunde (G.H.S. pr. Landes-Industrie-Comptoir, 1835)

Notizie della vita e delle opere di Pier'Antonio Micheli : botanico fiorentino - Targioni Tozzetti, Giovanni, 1712 -1783 (F. Le Monnier, 1858)

Notizie intorno alle piante spontanee dei monti Porrettani - Bertoloni, Giuseppe, 1804 -1878 (Tipi Gamberini e Parmeggiani, 1865)

Nouveau cours élémentaire de géologie : ouvrage accompagné de planches. Tome premier [-deuxième] - Huot, Jean Jacques Nicolas, 1790 -1845 (1839)

Nouveau dictionnaire d'histoire naturelle appliquée aux arts : principalement à l'agriculture et à l'économie rurale et domestique - Imprimerie de Crapelet (Paris, France) (Chez Deterville, 1803)