Hans O. Andersen has written:
'Toward more effective science instruction in secondary education' -- subject(s): Science, Study and teaching (Secondary)
'Readings in science education for the secondary school'
Poul O. Andersen has written: 'Profeten i busken'
Hans O. Barfod has written: 'Yellowknife' -- subject(s): Description, Views
Hans O. Leuenberger has written: 'Zauberdrogen' -- subject(s): Drug abuse, Hallucinogenic drugs
Flemming Gotthelf Andersen has written: 'O it fell once upon a day' -- subject(s): English Ballads, History and criticism
Hans Uebersberger has written: 'Russlands Orientpolitik in den letzten zwei Jahrhunderten' -- subject(s): Politics and government, Foreign relations 'O sterreich zwischen Russland und Serbien'
O. A. Sergeeva has written: '\\'
O. Sosin has written: '\\'
O. Petrash has written: '\\'
O. Vandeputte has written: 'Dutch'
O. Carlgren has written: 'Anthozoa'
O. A. Pashchenko has written: 'Rodichi'
O. Fedorova has written: 'Mozhaisk'