A modern Spanish-English & English-Spanish technical & engineering dictionary ; containing all the words used in civil, mechanical and electrical engineering; also many on aviation, wireless, architecture, railways, automobiles, shipbuilding, marine, chemistry, physics, mathematics, geology, mining, metallurgy, geography, surveying, commerce, agriculture, textile machinery, machine-tools, etc., etc. Suitable for Spain and all the Spanish-speaking countries of Central America and South America /