平装本封面；A4；284页 说明 《地下工程合同条件》（Emerald Book 绿宝石合同）第1版由国际咨询工程师联合会（FIDIC）与国际隧道及地下空间工程学会（ITA-AITES）携手合作出版。2023年经修订后重印。
Paperback cover; A4; 284 pages DescriptionThis First Edition of the “Conditions of Contract for Underground Works” (Emerald Book) is published by the Fédération Internationale des Ingénieurs-Conseils (FIDIC) in a joint endeavour with the International Tunnelling and Underground Space Association (ITA-AITES).It was reprinted in 2023 with amendments.