This crossword No. 10152 clues and answers were published on Sat 16 Nov 2002 and the puzzle can be visited by following The Guardian Quick Crossword No. 10152 link.
All Across Clues and Answers:
1-across – Haitian witchcraft : VOODOO
4-across – Foundation : BASIS
7-across – Exit – eccentric : WAYOUT
8-across – Perforate : PIERCE
9-across – Men : GUYS
10-across – Grotesque carving : GARGOYLE
12-across – Cat and mouse cartoon capers : TOMANDJERRY
17-across – Nation with a president as head of state : REPUBLIC
19-across – Doing word : VERB
20-across – Shake of the earth : TREMOR
21-across – Line on a map connecting points of equal atmospheric pressure : ISOBAR
22-across – Social class in India : CASTE
23-across – Not yet mature : UNRIPE
All Down Clues and Answers:
1-down – Bridge carrying a road over a river or valley : VIADUCT
2-down – Small arboreal marsupial : OPOSSUM
3-down – With eight sides and angles : OCTAGONAL
4-down – Sound of a spring : BOING
5-down – Device emitting fine droplets : SPRAYER
6-down – Record-player : STEREO
11-down – Brush-off : REJECTION
13-down – Keep down : OPPRESS
14-down – Pasta cases : RAVIOLI
15-down – Length in units of three feet : YARDAGE
16-down – Of the extreme north : ARCTIC
18-down – Drink heavily : BOOZE
This crossword has in total 25 where 13 are across and 12 are down.