Gold in porphyry copper systems / Edwin W. Tooker, Laurence P. James, Ted G. Theodore, Stephen S. Howe, David W. Blake.Edwin Tooker1990EN
Lawrence M. Clopper, "Songes of Rechelesnesse": Langland and FranciscansScase · Brepols Publishers, NV1999PDF137 KB
Records of Early English Drama: Chesterby Lawrence M. ClopperHudson · The Review of English Studies1982PDF319 KB
"Songes of Rechelesnesse": Langland and the Franciscansby Lawrence M. ClopperEmmerson · Project MUSE1999PDF324 KB
'Songes of Rechelesnesse': Langland and the Franciscans by Lawrence M. ClopperBenson · Project MUSE2000PDF287 KB
Chester. Records of Early English Drama, Volume 3by Lawrence M. ClopperTRAVIS · Project MUSE1980PDF370 KB
“Songes of Rechelesnesse”: Langland and the Franciscans by Lawrence M. ClopperSteiner · Project MUSE2001PDF251 KB
"Songes of Rechelesnesse": Langland and the Franciscans by Lawrence M. ClopperEmmerson · Project MUSE1999PDF312 KB
Cheshire (including Chester): Records of Early English Dramaby Elizabeth Baldwin; Lawrence M. Clopper; David MillsEpp · Sixteenth Century Journal Publishers2008PDF312 KB
Interindustry Forecasts of the American Economyby Clopper Almon,; Margaret B. Buckler; Lawrence M. Horwitz; Thomas C. ReimboldWessel · Eastern Economic Journal1974PDF309 KB
