@Misc{BVMC:270684, author = {Maignan, Emmanuel (O. Minim.)}, title = {Perspectiva horaria sive de horographia gnomonica tum theoretica, tum practica libri quatuor...}, url = {https://www.cervantesvirtual.com/obra/perspectiva-horaria-sive-de-horographia-gnomonica-tum-theoretica-tum-practica-libri-quatuor} }