Halliday,
475
Location of Parliaments in the 13th Century," www.parliament.uk.
476
David Boswell Reid,
477
Robert Bruegmann, "Central Heating and Forced Ventilation: Origins and Effects on Architectural Design,"
478
Thompson, "The Great Stench or the Fool"s Argument."
479
Halliday,
480
Porter,
481
Koeppel,
482
Blake,
483
Koeppel,
484