\documentclass[11pt,a4paper,landscape]{article}
%\pagestyle{empty}
\usepackage{t1enc}
\usepackage{german}
\usepackage{ucs}
\usepackage[utf8]{inputenc}
\usepackage[T1,T2A]{fontenc}
\usepackage{longtable}
\DeclareTextCompositeCommand{\^}{T1}{h}{h\llap{\^{}}}
\DeclareTextCompositeCommand{\^}{OT1}{h}{h\llap{\^{}}}

% \hyphenpenalty=10000
% \tolerance=1000
% \clubpenalty=10000
% \widowpenalty=10000
% \displaywidowpenalty=10000

\parskip2em
\parindent0em

%\addtolength{\textwidth}{2.5cm}
%\addtolength{\oddsidemargin}{-2cm}
\addtolength{\textwidth}{3.56cm}
\addtolength{\oddsidemargin}{-1.78cm}
\addtolength{\textheight}{2.8cm}
\addtolength{\topmargin}{-1.5cm}
\addtolength{\headsep}{-2mm}

\usepackage[total={255mm,16.5cm},left=2.1cm,top=2.5cm,footskip=.8cm]{geometry}

\makeatletter
\newenvironment{my-verse}
               {\let\\\@centercr
                 \list{}{\itemsep    \z@
                        \itemindent   -1.5em%
                        \listparindent\itemindent
                        \rightmargin  0em
                        \advance\leftmargin -1em}%
                \item\relax}
               {\endlist}
\makeatother

\usepackage[T1]{url}
%\urlstyle{same}

\usepackage{fancyhdr}
\usepackage{lastpage}
\pagestyle{fancy}%fancyplain}
\renewcommand{\headrulewidth}{0pt}
\rhead{\thepage{}/\pageref{LastPage}}
\cfoot{\leftmark}

\usepackage{calc}

\begin{document}

\newlength{\columnI}
\setlength{\columnI}{\maxof{\maxof{\maxof{\widthof{(O Rose thou art sick. )}}%
{\widthof{(The invisible worm, )}}}%
{\maxof{\widthof{(That flies in the night )}}%
{\widthof{(In the howling storm: )}}}}%
{\maxof{\maxof{\widthof{(Has found out thy bed)}}%
{\widthof{(Of crimson joy:)}}}%
{\maxof{\widthof{(And his dark secret love)}}%
{\widthof{(Does thy life destroy.)}}}}}
\newlength{\columnII}
\setlength{\columnII}{\maxof{\maxof{\maxof{\widthof{(Malsanas vi roz'!)}}%
{\widthof{(La larv' kaŝĉeesta,)}}}%
{\maxof{\widthof{(alflugis dumnokte)}}%
{\widthof{(tra hurlo tempesta,)}}}}%
{\maxof{\maxof{\widthof{(por lite vin trovi)}}%
{\widthof{(ruĝega pro ĝu',)}}}%
{\maxof{\widthof{(kaj en am' noktmistera)}}%
{\widthof{(jen via detru'.)}}}}}
\newlength{\columnTotal}
\setlength{\columnTotal}{\columnI + \columnII}
\newlength{\tableTotal}
\setlength{\tableTotal}{\textwidth - 2\tabcolsep}

\urldef{\theurl}\url{http://www.poezio.net/version?poem-id=974&version-id=,1961,1962}
\markboth{ \theurl }{}
\addcontentsline{toc}{subsection}{William  Blake, The Sick Rose; William  Blake, La rozo malsana}
\nopagebreak[1]
\begin{longtable}[c]{@{}p{\tableTotal*\ratio{\columnI}{\columnTotal}} p{\tableTotal*\ratio{\columnII}{\columnTotal}}@{}}
\endlastfoot\dots & \dots\endfoot

{\normalfont\large William  Blake,}
\vspace{2.4em}
&
{\normalfont\large William  Blake,}
\vspace{2.4em}
\\[-2em]

{\normalfont\LARGE The Sick Rose}
\vspace{1.4em}
&
{\normalfont\LARGE La rozo malsana}
\vspace{1.4em}
\\[-0.8em]
{\itshape }
&
{\itshape tradukita de Pejno Simono}
\\


\\[-2em]

\begin{my-verse}
O Rose thou art sick. \\
The invisible worm, \\
That flies in the night \\
In the howling storm: 
\end{my-verse}
&
\begin{my-verse}
Malsanas vi roz'!\\
La larv' kaŝĉeesta,\\
alflugis dumnokte\\
tra hurlo tempesta,
\end{my-verse}
\\[-2em]
\begin{my-verse}
Has found out thy bed\\
Of crimson joy:\\
And his dark secret love\\
Does thy life destroy.
\end{my-verse}
&
\begin{my-verse}
por lite vin trovi\\
ruĝega pro ĝu',\\
kaj en am' noktmistera\\
jen via detru'.
\end{my-verse}
\\[0.4em]

{\itshape \small Verkinto de tiu ĉi Angla
poemo estas {\scshape William  Blake}
($\ast$1757-11-28~--~$\dagger$1827-08-12).

\vspace{1em}
Arg-974-1961 (2014-03-13 02:17:35)

\vspace{1em}

Pri la poeto vidi la vikipediejon
\url{http://eo.wikipedia.org/wiki/William_Blake}.}
&
{\itshape \small Traduko de la Angla poemo
``The Sick Rose'' de {\scshape William 
Blake} ($\ast$1757-11-28~--~$\dagger$1827-08-12)
en Esperanton de {\scshape Pejno Simono}
(Simon Edward Adrian Payne, $\ast$1941-12-23).

\vspace{1em}
Arg-974-1962 (2014-03-13 02:12:38)

\vspace{1em}

}
\\

\end{longtable}
\end{document}
