The Japanese cover of their novel of David Whitaker's
Doctor Who and the Daleks This is part of a set of five that were published in 1980 by Hayakawa Bunko.
This particular one is
Doctor Who in an Exciting Adventure with the Daleks, which here is called Jikuu Daikettou! which roughly translates to 'Big Bloody Space-Time Battle!'.
The other four are:
Darek Zoku no gyakushuu! (
Day of the Daleks translating to The Dalek Race's Counterattack!)
オートン軍団の襲来! (
The Auton Invasion, translated to Auton Corps of Attack!)
戦慄! 地底 モンスター (
The Cave Monsters translated to Horror! Underground Monster!)
and
Osoru Beki Saishyuu Heiki! (
The Doomsday Weapon translating to Be Fearful of the Ultimate Weapon!)
Thanks to Mobius6432 who provided this info elsewhere.