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What has the author P O P written?
P. O. has written: '[Pi omicron] revisited'
What has the author P O Ripley written?
P. O. Ripley has written: 'Land clearing'
What has the author O P Zier written?
O. P. Zier has written: 'Sturmfrei' 'Andeutungen'
What has the author P I Svider written?
P. I Svider has written: 'O. Kopylenko'
What has the author O P Yakovleva written?
O. P. Yakovleva has written: 'Formirovanie i izmerenie rezervov proizvodstva'
What has the author O P Tolochko written?
O. P. Tolochko has written: '\\' -- subject(s): Historiography, History
What has the author O P Burmatova written?
O. P. Burmatova has written: 'Optimizatsiya prostranstvennoi struktury TPK'
What has the author O P A P Dufrenoy written?
O. P. A. P. Dufrenoy has written: 'Traite de mineralogie' 'Voyage metallurgique en Angleterre'
What has the author A P Sergeenko written?
A. P. Sergeenko has written: 'Rasskazy o L.N. Tolstom'
What has the author P Savitskii written?
P. Savitskii has written: 'Skazaniya inostrantsev o Sibiri'
What has the author P O Johnson written?
P. O. Johnson has written: 'The Wash sprat fishery' -- subject(s): Fisheries, Sprat
What has the author O P Sharma written?
O. P. Sharma has written: 'Universal literacy' -- subject(s): Literacy, Literacy programs
