R. Humphreys has written:
'Heat, light, and work' -- subject(s): Thermodynamics
R. A. Humphreys has written: 'Colloquial French' -- subject(s): Conversation and phrase books, French language, Spoken French 'Origins of the Latin American Revolutions'
R. C. Humphreys has written: 'History of research in general practice in Wales, 1950-1992' -- subject- s -: Medicine, Research, Physicians - General practice -, History
Gordon J.F Humphreys has written: 'Tachobook'
JOHN HUMPHREYS has written: 'NUMBERS, GROUPS AND CODES'
Karen Elizabeth Humphreys has written: 'Performing from memory'
T. Jones-Humphreys has written: 'Esboniad yr efrydydd'
Ran Humphreys has written: 'Paul's Prison Epistles' 'Biblical Impressions'
Gordon J F. Humphreys has written: 'Tachobook'
Joel Don Humphreys has written: 'Over the Top' 'Vendetta'
Eric Humphreys has written: 'The Alternative Holiday Guide to Golfing in Europe'
D. W. Humphreys has written: 'Local history in school'
George W. Humphreys has written: 'Main drainage of London'