in pencil , unwisely (7)  - PELICAN {PELIC{A}N*} 13 - See crushed ice does (7)  - DIOCESE * 14 - Book different course , following Heath , perhaps (8,6)  - ROBINSON CRUSOE {ROBINSON} {COURSE*} 18 - Mixed up metal dealer with war poet (6,2,2,4)  - WALTER DE LA MARE * 20