Spencer, John R. |
Filarete's description of a fifteenth century italian iron smelter at ferriere / John R. Spencer |
In: Technology and culture Vol. 4 (1963), p. 201-206 |
Spencer, John R. |
Il progetto per il cavallo di bronzo per Francesco Sforza / John Spencer |
Spencer, John R. |
Response in defense of Filarete / John R. Spencer |
In: Technology and culture Vol. 5 (1964), p. 406-407 |
Spencer, John R. |
Sources of Leonardo da Vinci's Sforza monument / John R. Spencer |
Spencer, John R. |
Ut retorica pictura : a study in Quattrocento theory of painting / by John R. Spencer |