La pomone françoise, ou, Traité de la culture et de la taille des arbres fruitiers,

Mode of access: Internet.

Experiments in transonic flow,

"Prepared by the California Institute of Technology, Pasadena, California, in June 1947, under AAF contract no. W33-038 ac-1717 (11592), supplemental agreement no. 6."

Lucas Guevara.

Mode of access: Internet.