The defendant appeals from his conviction for driving under the influence. Held:

1. The evidence was sufficient to support the jury's verdict of guilty.

2. The trial court did not err in admitting into evidence a police officer's testimony that he was certified by the state crime laboratory to conduct breath analysis tests and what the results of those tests on this defendant were. Nor did the court err in admitting into evidence copies of the same officer's certificate to conduct such tests, the machine operating record, and the written report of the test conducted. Code Ann. 68A-902.1 (a).

68A-902.1 (a)(4). The defendant only made limited use of the subpoena power and any failure on his part to avail himself of the full powers given him cannot be complained of on appeal.

4. Each of the five enumerated errors is without merit.