Gregory J. Campbell has written:
'Petrography and stratigraphy of the North band of iron formation, Sherman Mine, Temagami, Ontario'
J. W. Gregory has written: 'Dalradian geology'
Ralph J. Campbell has written: 'Local lyrics'
Robert J. Campbell has written: 'Morality of Caring'
John J. Campbell has written: 'Speak for yourself'
Gregory J. Hamlin has written: 'Tetrobot' -- subject(s): Robotics
J. S. Gregory has written: 'Russian land soviet people'
Wallace J. Campbell has written: 'Helping people help themselves'
Gregory J. Retallack has written: 'Soils of the past' -- subject(s): Paleopedology
Gregory J. O'Toole has written: 'An investigation of the UTIAS adaptive washout algorithm'
J. M. S. Campbell has written: 'Note on hydraulic design of \\'
James J. H. Gregory has written: 'Squashes' -- subject(s): Squashes
J. Campbell has written: 'The Cumberland coal fields, Nova-Scotia' -- subject- s -: Coal