WASCO /
National Water and Soil Conservation Organization.1n
New Zealand.National Water and Soil Conservation Authority.1n
Wellington North, New Zealand : National Water and Soil Conservation Organisation.
Some no. issued in rev. eds.
Description based on: No. 27 (1982) ; title from cover.
Some no. have individual titles.
Issue carrying the distinctive title Soil conservation in New Zealand lacks numerical and chronological designations but constitutes no. 45.
Published for: the National Water and Soil Conservation Organisation, no. 28-38; the National Water and Soil Conservation Authority, no. 39-
Some no. issued also as supplements to: Soil & water.
Soil conservation
Water conservation
Soil & water