Bertrand P. Helm has written:
'Time and reality in American philosophy' -- subject(s): American Philosophy, History, Time
P. J Helm has written: 'History of Europe, 1450-1660' -- subject(s): History
P. Y. Bertrand has written: 'Les noms des plantes au Maroc' -- subject(s): Botany, Nomenclature
P. Bertrand has written: 'Bassin houiller de la Sarre et de la Lorraine' -- subject(s): Coal, Fossil Ferns, Paleobotany
J. P. Bertrand has written: 'Timber wolves' -- subject(s): History, Crown lands, Pulpwood industry, Lumber trade, Forest products industry
P. Weerasekera has written: '\\'
P. P. Adamovich has written: 'Krasnye orly'
P. Maycock has written: '[Sketchbook]'
P. Pintelas has written: 'The implementation of the \\'
A. P. Roley has written: 'Revolt'
P. A. Buser has written: 'Vision'
P. Kann has written: 'Leningrad'
P. Gresswell has written: 'Environment'