Oxford junior encyclopaedia /
Salt, Laura E.
Oxford junior encyclopaedia / by Laura E. Salt - London : Oxford University Press, 1949. Oxford : Oxford University Press, 1974. London : Oxford University Press, 1955. London : Oxford University Press, 1954. London : Oxford University Press, 1952. London : Oxford University Press, 1953. London : Oxford University Press, 1950.
V.3, engineering
Encyclopedia Oxford
Oxford junior encyclopaedia / by Laura E. Salt - London : Oxford University Press, 1949. Oxford : Oxford University Press, 1974. London : Oxford University Press, 1955. London : Oxford University Press, 1954. London : Oxford University Press, 1952. London : Oxford University Press, 1953. London : Oxford University Press, 1950.
V.3, engineering
Encyclopedia Oxford