O. B. Gregory has written:
'Sheep farmers'
'Airline pilots'
'Essentials of verbal reasoning'
'War against disease' -- subject(s): Disease
'Practise your spelling'
'Lumberjacks'
'First English workbooks'
'Bus drivers'
'Robert Clive'
'First steps to language'
O B Gregory is known for writing the fantasy novel "A Midwinter Sellsword."
W. W. Gregory has written:
'A revised check-list of the butterflies and skippers of Canada (Lepidoptera)' -- subject(s): Butterflies, Hesperiidae, Lepidoptera
Gregory O. Smith has written: 'Is the oil running out?' -- subject(s): Petroleum industry and trade, Petroleum reserves
Gregory O. Vigle has written: 'A new species of Dendrobates (Anura, Dendrobatidae) from the lowland rain forests of Western Ecuador'
O. B. Gugler has written: 'Commercial lithography'
B. O. Cooke has written: 'Bristolia Britannica'
O. B. Patterson has written: 'Surf-riding'
O. B. Getz has written: 'Die Flucht aus Namsos'
B. O. Unbegaun has written: 'Russian grammar' 'Russkie familii'
O. B. Hart has written: 'Argument' -- subject(s): Legislators
B. O. Egiazaryan has written: 'Effektivnost' nauchno-tekhnicheskogo progressa'
R. O. B. Manley has written: 'Bee-keeping in Britain'
J. B. O. Sneeden has written: 'Introduction to internal combustion'
O. T. B. Williams has written: 'Seward County, its description, resources and advantages..'