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Many thanks.

Great, many thanks.

Note that numbers within the table columns are not Arial.

The code below has set arial font throughout file. However, note the table contents is not arial. How can I make even the table content arial font?

\documentclass[12]{article}

\renewcommand{\rmdefault}{phv}
% Arial font
\renewcommand{\sfdefault}{phv}
% Arial font

\begin{document}

\title{test ...

The file is here: http://www.math.smith.edu/%7Enhorton/sl ... pter13.Rnw

I have a .tex file that includes following in preamble:
If I try to compile a pdf, I get following error message and the PDF is not compiled.

"LaTeX Error: File 'language.sty' not found".

How can I get the PDF to compile?

I've got as far as working out that this code is stopping the final author being delimited with '&'. If block of code below is removed, the final authors in bibliography become delimited with '&':

\DeclareFieldFormat[article]{pages}{#1}
\DeclareNameFormat[article,periodical,book,electronic]{author ...

More problems have arisen with biblatex . Using the attached .bib file and .tex file, the bibliography is currently printing as in attached screenshot.

I'm aiming for following bibliography:
Andersson, S. 1999. Morphology....
Armenta, J.K., Dunn, P.O. & Whittingham, L.A. 2008. Effects.....

So ...

Many thanks, problem solved.

Many thanks for your help. Problem addressed in this thread solved. There are other problem with my code, and having read board rules, I have started a different thread.