Yazar
j wierenga
9 cilt bulundu.
Bob Bushnell, Melvin J. Wierenga · Delmar Publishers
289 sayfa · 2000
Sound / Equipment and supplies / Maintenance and repair / Installation / Electric apparatus and appliances
P. J. Wierenga · Dept. of Water Science and Engineering, University of California
152 sayfa · 1968
Irrigation water / Soil temperature
P. J. Wierenga · New Mexico Water Resources Research Institute, in cooperation with Dept. of Agronomy, New Mexico State University
212 sayfa · 1979
Cotton / Cotton growing / Irrigated Soils / Irrigation / Microirrigation
P. J. Wierenga · for sale by the National Technical Information Service
158 sayfa · 1977
Irrigation water / Microirrigation / Salts in Soils
P. J. Wierenga · for sale by the National Technical Information Service
158 sayfa · 1977
Irrigation water / Microirrigation / Salts in Soils
K. Botha, J. Wierenga, M. Nothling · Juta Gariep
Sayfa sayısı yok · 2004
Modern languages: readers & reading schemes / Afrikaans
K. Botha, J. Wierenga, M. Nothling · Juta Gariep
Sayfa sayısı yok · 2004
Modern languages: readers & reading schemes / Afrikaans
K. Botha, J. Wierenga, M. Nothling · Juta Gariep
Sayfa sayısı yok · 1999
English language: core course material
A.J. Wierenga, C. Post, J. Koornstra · Politie & Wetenschap
343 sayfa · 2016
Emergencies / Law and legislation / Emergency management / Local government