The broader concepts of HIH are addressed in the American Society for Horticultural Science (ASHS) by the socio-horticulture working group and in the International Society for Horticultural Science (ISHS) by the HIH working group (under formation). The People-Plant Council (PPC) was formed in 1990 to encourage research in this area. To accomplish its goals, it has developed numerous resources available to researchers, students, the industry, and the media. These include books, computerized bibliographies, videotapes, and information on an Internet gopher server (see side bar E for resources available from the PPC). HIH is concerned with the interface between the user of horticultural crops and services and the horticulture industry and professionals (Relf, 1995).