A tropical surprise in a Dutch early medieval well.

MLA

Kooistra, L. I, and Wilfried A. M Hessing. A Tropical Surprise In a Dutch Early Medieval Well. Amersfoort: ROB, 1989.

APA

Kooistra, L. I, & Hessing, W. A. M. (1989). A tropical surprise in a Dutch early medieval well. Amersfoort: ROB.

Chicago

Kooistra, L. I., and Wilfried A. M. Hessing. A Tropical Surprise In a Dutch Early Medieval Well. Amersfoort: ROB, 1989.