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by Lofland; John
by Lofland,John
by Lofland, Lyn H.; Troyer, John; Francis, Ara A.
by John Lofland, David Snow, Leon Anderson, Lyn H. Lofland
by Lofland, John; Haig, Phyllis
by Lofland, John
by Lofland, John; Snow, David A.; Anderson, Leon; et al.