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