P. Sitorus

Productivity of imported and local Friesian dairy cattle in Pangalengan, Bandung, West Java.

Subandriyo, T. Sugiarti, P. Sitorus, 1986 .

The use of copper levels in hair to diagnose hypocuprosis.

R. Kellaway, J. Leibholz, P. Sitorus, 1978, Research in veterinary science.

Reproduction in Javanese sheep: evidence for a gene with large effect on ovulation rate and litter size.

B. Tiesnamurti, G. Bradford, I. Inounu, 1986, Journal of animal science.