Second progress report on the utilization evaluation of an aid hand operated water pump /
Second progress report on the utilization evaluation of an aid hand operated water pump /
prepared by the U. S. Agency for International Development ; by Phillip W. Potts [y otros]
- 127 páginas
Maquinaria de bombeo
TJ903 / E83
Maquinaria de bombeo
TJ903 / E83