Back موريس دوكانى ARZ Philbert Maurice d'Ocagne Catalan Maurice d’Ocagne German Maurice d'Ocagne Spanish Maurice d'Ocagne French Maurice d'Ocagne Italian Maurice d'Ocagne Portuguese Окань, Морис Russian Maurice d'Ocagne Swedish Моріс Окань Ukrainian
Philbert Maurice d'Ocagne (25 March 1862 – 23 September 1938) was a French engineer and mathematician. He founded the field of nomography, the graphic computation of algebraic equations, on charts that he called nomograms.