[Quelch]

I have some science fiction eBooks in Word RTF format
What eBook app would I need to install on my Nexus 7 to be able to read them in their native Word format

I converted one eBook, into mobi with calibre 2.4
Worked on my Android tablet in the 'FBreader' app,
But
There are gaps between the lines which is a bit irritating

Converted another ebook to azw3 with calibre, that worked better on the tablet
but not completely normal, just less gaps

Converted book 1 to ePub but it displays with gaps between the lines too
in two different eReader apps
Reading them in Microsoft Word on the computer it displays properly, surprise, surprise

Any suggestions would be appreciated

Quelch