Agricultural technology transfer is currently a frequently heard expression in the developing world. Three phases can be identified in international interinstitutional transfer of technology to small land holders: material transfer, design transfer, and capacity transfer. Examples of material transfer include movement of IR-5 and IR-8 rice varieties to countries in South Asia and Latin America in the sixties and early seventies. The transfer process requires three steps for the transfer chain in the international-national context: international research to national research, research to extension, and extension to farmer. Nine mechanisms interact in transferring technology in the international-national realms: physical movement of finished technologies across borders, distribution of segregating germplasm, research networking, training of research and extension workers, conferences, regional technical assistance, cooperative bilateral contracts, classical information, and documentation.