51.   This could be helpful in tracing the origin of explosives used in bombings.

52.   Tracing the origins of the explosive, however, is impossible because it was vaporized, a senior officer said.

53.   Tracing its origin is easier when it infects groups of people at social events, but it also pops up in individuals.

54.   Unlike other new world African enclaves such as Cuba or Haiti, Afro-Peruvians cannot trace their origins to particular African cultures.

55.   While an Ebola virus outbreak kills scores of Africans, its origin is traced to a northern Californian town.

56.   All of them trace their origins to the Rashtriya Swayamsevak Sangh, a group that works to spread Hindutva, or Hindu ideology.

57.   An international team of scientists is also trying to trace the origin of the disease, believed to be carried by forest mammals or insects.

58.   And an international team of scientists is continuing research to trace the origin of the disease, thought to be carried by forest mammals or insects.

59.   Chuan ordered the police to seize the money and trace its origin.

60.   Coke said Tuesday it traced the origin of the problems in Belgium to the Dunkirk plant and another factory in the Belgian city of Antwerp.