Louwes, S. L. (1967). Conversion factors used by the EEC countries reporting fishery statistical data to the Statistical Office of the European Communities. Food and Agriculture Organization of the United Nations.

Louwes, S. L. Conversion Factors Used by the EEC Countries Reporting Fishery Statistical Data to the Statistical Office of the European Communities. Rome: Food and Agriculture Organization of the United Nations, 1967.

Louwes, S. L. Conversion Factors Used by the EEC Countries Reporting Fishery Statistical Data to the Statistical Office of the European Communities. Food and Agriculture Organization of the United Nations, 1967.