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Circa

Known as: CCA, Cca., Ca. 
Circa (from Latin, meaning "around, about"), usually abbreviated c., ca or ca. (also circ. or cca.), means "approximately" in several European… 
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Papers overview

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Highly Cited
2004
Highly Cited
2004
‘‘The blood of martyrs is the seed of Christians,’’ wrote Tertullian in the third century. He recognized the importance of… 
Highly Cited
2001
Highly Cited
2001
Rhodamine 6G-doped mesostructured silica is prepared by an acidic sol−gel route using poly-b-poly(propylene oxide)-b-poly… 
Highly Cited
1999
Highly Cited
1999
Mesoporous tin oxide stable up to 500 °C has been prepared for the first time using both cationic and neutral surfactants. 
Highly Cited
1997
Highly Cited
1997
The reaction between MnCl 2 ·4H 2 O, Hhmp (Hhmp = 2-hydroxymethylpyridine) and NEt 4 MnO 4 in MeCN gives NEt 4… 
Highly Cited
1992
Highly Cited
1992
Contents: Preface The role of women in Byzantine society (with addendum) Observations on the life and ideology of Byzantine women… 
Highly Cited
1983
Highly Cited
1983
ion and Notation Computer Classes and Evolution A computer is a complex system incorporating diverse technologies. Typically… 
Highly Cited
1983
Highly Cited
1983
dryland are described. On a dry hill country site in the Wairarapa, the contribution of the sown grasses established in separate… 
Review
1982
Review
1982
The palaeogeographical and palaeoclimatic development of the Kalahari region provides strong evidence that South African climatic… 
Review
1974
Review
1974
Scalar product, therefore, insignificant test scales. download Gears from the Greeks: The Antikythera Mechanism, a Calendar… 
Review
1972
Review
1972
The thermal decomposition of di-n-butylbis(triphenylphosphine)platinum(Il) (l) in methylene chloride to n-butane, l-butene, and a…