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: Hazard 5: Lead 6: Japan 7: Contamination 8: Feeder 9: Range 10: Change 11: Electricity 12: Fishery 13: Carbon 14: Atmosphere 15: Process 16: Bird abatement 17: Periplaneta americana 18: Sample 19: Water 20: Coal (As of 17:35)