. . "National Science Teachers Association. Southwestern Regional Meeting." . . . . . . . . . "Some geologic hazards and environmental impact of development in the San Diego area : guidebook to field trip T-10, southwestern regional meeting, National Science Teachers Association"@en . . . . . . . . . . . . "Some geologic hazards and environmental impact of development in the San Diego area guidebook to field trip T-10, southwestern regional meeting, National Science Teachers Association"@en . . . . . . "Some geologic hazards and environmental impact of development in the San Diego area : guidebook to field trip T-10, Southwestern Regional Meeting, National Science Teachers Association"@en .