By R. Duchaufour
This booklet is the 1st of 2 volumes meant to switch the previous and now out of print summary de pedologie, the former 3 variations of that have been professional duced by means of an identical writer in 1960, 1965 and 1970. It used to be obvious that the time period 'precis', this means that the textual content was once neces sarily condensed and summarised, now not corresponded with the current day state of affairs, for pedology has built significantly long ago 10 years and it now uses the main smooth and sundry study strategies. It has turn into a wholly separate self-discipline and has assumed, no less than in convinced nations, massive value. moreover, diverse colleges of suggestion have constructed and their occasionally contradictory viewpoints are offered at many overseas meetings, which, if legitimate conclusions are to be reached from them, required substantial area for dialogue. hence, even through being very concise it used to be not attainable to accommodate the total of soil technology in the house of 1 quantity, in order that a quantity layout turned a need. As soil technology is understood to have essentially specified features, it's been effortless to figure out the contents of every quantity and in addition to offer every one an identification and team spirit, in addition to allowing a distinct type of presentation to be made in each one case.