american physical society (aps) (370)
hal ccsd (369)
amer physical soc (351)
american physical society (288)
wiley-blackwell (142)
elsevier b.v. (116)
oxford university press / usa (105)
springer nature (83)
taylor & francis ltd (61)
elsevier ltd (60)
ieee (55)
lippincott williams & wilkins (49)
bmj publishing group (46)
biomed central (44)
nature publishing group (35)
nature publishing group uk (33)
sage publications inc. (30)
boydell and brewer (29)
gale (24)
canadian review of books ltd. (22)
nature portfolio (22)
public library of science (21)
st. joseph communications (20)
american chemical society (16)
centaur communications (16)
cambridge university press (15)
oxford university press (14)
bmc (13)
pwxyz llc (11)
lancet (10)
media source, inc. (8)
university of toronto press (8)
sage publications, ltd. (6)
university of st andrews (5)
university of edinburgh (4)
한국토양비료학회 (2)
academy of sciences of the czech republic, institute of physics, prague (1)
blackwell publishers, inc., boston, ma (1)
british broadcasting corporation (bbc) (1)
michigan state university. (1)
new york university. (1)
on behalf of the institution of electrical engineers (iee), london (1)
opus arte (1)
oxford university press, oxford (1)
pergamon press, oxford (1)
peter peregrinus, ltd., stevenage (1)
proquest dissertations & theses (1)
the japanese pharmacological society (1)
wilfrid laurier university press (1)
world sci. publ., river edge, nj (1)