0 • A • B • C • D • E • F • G • H • I • J • K • L • M • N • O • P • Q • R • S • T • U • V • W • X • Y • Z
1: Active solar heating system 2: Soil 3: Community 4: Contamination 5: Lead 6: Range 7: Hazard 8: Feeder 9: Japan 10: Fishery 11: Carbon 12: Electricity 13: Change 14: Atmosphere 15: Process 16: Bird abatement 17: Water 18: Periplaneta americana 19: Sample 20: Coal (As of 10:50)