Iradokizunak:
"Principle of progression" » "Principle of progresion" (Bilaketa hedatu), "Principle of progressive" (Bilaketa hedatu), "Principle of regression" (Bilaketa hedatu)
"Principle of progression" » "Principle of progresion" (Bilaketa hedatu), "Principle of progressive" (Bilaketa hedatu), "Principle of regression" (Bilaketa hedatu)
1