1. Chromosome studies in spontaneous abortions;Carr;Obstet. and Gynec,1965
2. Genetic factors in pregnancy wastage;Carr;Med. Clin. N. Amer.,1969
3. Chromosomal anomalies in human foetuses;Carr;Res. in Reprod,1972
4. Standardization of procedures for chromosome studies in abortion;Geneva Conference;Bull. Wld. Hlth Org,1966
5. Possibility of culturing foetal cells at early stages of pregnancy;Hahnemann;Clin. Genet,1972