It is an attractive method to combine GPS observations with the information from other surveying system to improve the ambiguity resolution. This research is co
<正>0 RésuméLe jeu de mots est un phénomène très fréquent dans la vie courante.Nous le fréquentons partout, comme sur des jou
An improved ethylene blue method for determination of sulfide is developed. It has been adapted to a direct determination of sulfide by both common spectrophoto