Propagation of plants; a complete guide for professional and amateur growers of plants by seeds, layers, grafting and budding, with chapters on nursery and greenhouse management,

Bibliography: p. 527-531.

Seed farming in Britain : a practical treatise on the cultivation of vegetables for the production of seeds.

Mode of access: Internet.

Plants, seeds, and currents in the West Indies and Azores; the results of investigations carried out in those regions between 1906 and 1914,

Mode of access: Internet.