Nuclear and related techniques for improving productivity of indigenous animals in harsh environments : proceedings of an advisory group meeting on improving the productivity of indigenous animals in harsh environments with the aid of Nuclear Techniques, held in Ankara from 3 to 8 june 1985 and selected contributions to the seminar for Developing countries in Africa and the middle east on research using techniques aimed at improving meat, milk and wool production from ruminant animals held in Ankara from 3 to 7 June 1985 (Panel proceedings series, 1986)