Malaysia, 1976-1994:

H.422: Correspondence with Malaysian scientists, 1976-1977.

H.423: Correspondence with Ho Coy Choke of the Department of Genetics and Cellular Biology, University of Malaya, and others, 1980-1981.

H.424-426: Correspondence and papers regarding the First Asian Workshop on Fermentation Technology held in Kuala Lumpur, 22-24 February 1982.

H.427-H.428: Correspondence with Malaysian and Singaporean scientists, 1982-1988.

H.429: Correspondence with Ho Coy Choke, Department of Genetics and Cellular Biology, University of Malaya, 1989-1994.

Spain, 1970-1993:

H.430: Correspondence regarding an article on the chemistry of new antibiotics for Tribuna Medica, 1970-1971.

H.431: Correspondence and papers regarding the Third International Symposium on Yeast Protoplasts in Salamanca, 2-5 October 1972

H.432: Correspondence with Spanish scientists regarding research and visits, 1978-1981, 1986, 1993.

Sweden, 1975-1992:

H.433-H.437: Correspondence and papers regarding visit to Sweden in December 1975.

H.438: Correspondence with Swedish scientists and others, 1976, 1984-1992.