SELECT b$.$title

FROM Books b

JOIN publishers p ON b$.$pubid $=$ p$.$pubid

WHERE $($b$.$category $=$ 'Computer' OR b$.$category $=$ 'Family Life'$)$

AND $($p$.$pubname $=$ 'Publisher $1\text{'}$ OR p$.$pubname $=$ 'Publisher $3\text{'})$

AND b$.$retail $>=45\mathrm{.}00$;