1. Keeping the land alive: soil erosion--its causes and cures
پدیدآورنده : Kelley, Hubert W.
کتابخانه: Central Library of Agricultural (Tehran)
موضوع : $ASoil conservation,$ASoil erosion,$ASoil management,$ASoil conservation$BGovernment policy
رده :
S
623
.
K38
1983
