MEDIUM QUARTO
Meaning of MEDIUM QUARTO in English
Chiefly Brit.
a size of book, about 9 1 / 2 × 12 in. (24 × 30 cm), untrimmed. Abbr.: medium 4to
Random House Webster's Unabridged English dictionary.
Полный английский словарь Вебстер - Random House .
2012