6.25 Lens Design
6.50 Mechanical Manipulation 7!15 Geology: Plate Tectonics
7.40 Photoelectron Spectroscopy
8.5 Biochemistry: The Ribosome
8.30 Biology: Skeletal Adaptations
8.55 Family Comedy
9.20 Maths: Relations
9.45 Barnacle Geese
10.10 Steel Castings
10.35 Religious Education
11.0 Mammals in Water
11.25 Computing: Operating Systems
11.50 Plaice: Migratory Patterns
12.15 Maths: Complex Analysis
12.40 Foetal Physiology
1.5 The Athabasca Glacier
1.30 Aerials and Radar

Introduced by Desmond Lynam
2.0 *
Cricket
The John Player League
Extended cdverage of this afternoon's match in the popular 40-overs-a-side competition. With two months to go in the Championship, there is still time for one of the struggling counties to make an impact, and surprise the leaders. Commentators JIM LAKER
CHRISTOPHER MARTIN-JENKINS and PETER WALKER
4.0
Golf
During the tea interval in the cricket match, HARRY CARPENTER looks ahead to the start of next week's Open Championship at Troon. Can US Open Champion Tom Watson claim a fourth title, having previously won at Carnoustie in 1975, Turnberry in 1977, and Muirfield two years ago?
(Coverage of the Open begins on BBC1 on Thursday at 10.55 am)
Plus the latest news from Madrid, where the 12th World Cup Final takes place tonight, with coverage on BBC1 starting at 6.30.
The above timing indicates only the first of several transmissions Television presentation:
Cricket BOB DUNCAN and JEFF GODDARD Assistant editor Grandstand JOHN ROWLINSON
Producer Grandstand MARTIN HOPKINS Editor Grandstand MIKE MURPHY

The feature film starring
John Wayne , Richard Widmark
Laurence Harvey , Richard Boone
This homage to the men who saved Texas from the Mexicans in 1836 remains one of the most lavish and spectacular Westerns ever made. Directed by John Wayne , it tells the story of America's most famous battle and features such legendary heroes as David Crockett and James Bowie.
Screenplay by JAMES EDWARD GRANT
Produced and directed by JOHN WAYNE Films, page 15

The second of three programmes lieds in the Red
A report by Paul Barry with Brian Widlake and Valerie Singleton Poland is bankrupt and short of food and raw materials. The Soviet grain harvest has failed for the fourth year in a row. The Romanians cannot meet their debt repayments to the West. In short, Comecon is in trouble, not least because almost all credit from the West has been cut off.
Will this crisis force the Communist countries to reform, like Hungary, or push them back into the arms of Russia? And can the West influence them by giving or withholding technical help and money?
Film editor ROBERT BROWN Researcher BRIAN STAVELEY Studio director DON HARLEY Producer DAVID ROWLEY Editor ANDREW CLAYTON

The world-renowned Welsh tenor in a programme of popular songs, ballads and operatic arias. His guest in the first of six programmes is
Kiri Te Kanawa
BBC WELSH SYMPHONY ORCHESTRA leader DESMOND BRADLEY conducted by ROBIN STAPLETON accompanist JOHN CONSTABLE
Designer PAULINE HARRISON Lighting TONY ESCOTT Sound HARRY THOMAS
Producer J. MERVYN williams BBC Cymru/Wales

with Jan Leeming Weather

continues a season of films featuring one of the screen's most powerful actors
Tonight with Louise Fletcher
' I may bite the dust but you can't kill what I stand for in this town. That lives on for ever.' Young David hurls these defiant words-taken from his favourite Western -at the Nazis who control the small Dutch village where he is hiding. But tragically his world of movies and fantasies is far removed from the realities of war and persecution ... This is the British premiere of a Canadian film, in which Steiger gives a brilliant performance as Colonel Gluck, the kidnap victim of the town's young ' Sheriff' who wears his obligatory Yellow Star with a mixture of pride and innocence.
It is charming, heart-tugging, handsomely photographed like a series of Dutch paintings, and smoothly acted and directed (variety) Produced by CLAUBE LEGER
Written and directed by MAX FISCHER (First showing on British television) Films: page IS