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