@book{6314,
	author = {McGrail, Sean and Sean McGrail (Ed.)},
	title = {Archaeology of medieval ships and harbors in Northern Europe: paper based on those presented to an International Symposium on Boat and Ship Archaeology at Bremerhaven in 1979},
	publisher = {National Maritime Museum},
	year = {1979},
	series = {B A R International Series 66, 1979},
	address = {Greenwich}
}