This mission of technical assistance on rubber breeding experimentation aimed at providing ADP project with clonal recommendations up-dated and fitted with the objectives of the project and the smallholders as main users. It was realised by André Clément-Demange (a Cirad rubber breeding specialist) with 3 members of RRIV Breeding Group and with the Coordinator of the ADP Research Component, in December 2-18, 2001. Around 30 different large scale trials have been visited in Lai Khê Centre (South), Central Highlands and Coastal Provinces from Nghê An province to Thua Thien Hué province. Data and observations have been discussed. First results of the mission have been jointly presented by the RRIV Breeding Group and the expert to ADP in Hué (December 14, 2001) and to RRIV in Ho Chi Minh City (December 17, 2001). This report presents the final proposal of the expert for up-dated and more diversified clonal recommendations to be used by ADP project, as well as proposals for further experimentation and ideas for breeding.