I am looking for a copy of the Phd dissertation of Sonja Tirkkonen/Condit. Do you know where I can obtain an english version please?

The book You asked is available in some Helsinki libraries. The list follows. If you like to have your own copy, You can also ask directly from the University of Jyväskylä tel. (014) 603432 e-mail neuvonta@library.jyu.fi

Tirkkonen-Condit, Sonja
Argumentative text structure and translation
Jyväskylä : University of Jyväskylä, 1985
256 p.
(Studia philologica Jyväskyläensia, ISSN 0585-5462 ; 18)
Diss
ISBN 951-679-325-8

It seems available now in two libraries:

-Undergraduate Library
Helsinki University Library
(http://www.opiskelijakirjasto.lib.helsinki.fi/)
(Vuorikatu 7)
PL 53, 00014 Helsingin yliopisto
Information tel. 09-19123920

and

-Helsinki University Library (http://linnea.helsinki.fi/hyk/)
University of Helsinki
(Unionink. 36)
PL 15, 00014 Helsingin yliopisto
Lending office tel. 09-19123196
Information tel. 09-19122740
e-mail: HYK-palvelu@helsinki.fi

You can also ask in

-Research Institute for the Languages of Finland. Library
Sörnäisten rantatie 25
00500 HELSINKI
tel (09) 731 5360
Fax (09) 731 5309
kirjasto@domlang.fi