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по существу stresses
gen.	substantive (напр., substantive argument – аргументация по существу (англ. статья – ч.р. прил.) Халеев); intrinsically; essentially; pertinent; effectively (ABelonogov); to the point; to all intents and purposes; to all intents (grigoriy_m); substantial; at bottom; per se; as such; in essence; in substance; in principle; in effect; on its merits; on points of fact (Alex_Odeychuk); on the basis of merit; short and sweet (to the point Interex); by definition (Taras); at root; on target (о доводе, аргументе, действии и т.п.); only too; Put concisely (tradeskantia); for all practical purposes (Moreover, each of the Eastern European countries of the Warsaw Pact has a separate national system equipped almost exclusively with Soviet materiel and organized in much the same manner. For all practical purposes these systems constitute an extension of the Soviet system. 4uzhoj); in a substantial manner (I. Havkin); for all intents and purposes (VLZ_58); at the core (VLZ_58); on-point (george serebryakov); at its core (Sergei Aprelikov); ultimately (cognachennessy); inherently; substantially; meaningfully (Trident); fundamentally (ssn); substantively; objectively (Andrey Truhachev); pithily; in grain; factually (Andrey Truhachev); soberingly (Andrey Truhachev)
Игорь Миг	in all but name; pointedly
construct.	on merits (дела)
France	au fond (Ремедиос_П)
idiom.	come down to (Interex); deep down (Fundamentally; in essence; in reality; really.: He seems like an average businessman, but deep down he's an overgrown kid with a necktie. Interex); the stuff but not the fluff (Soulbringer)
inet.	on-topic (aconty)
inf.	all but (The decision all but eliminated Canada from gold-medal contention and put Great Britain in the driver’s seat. VLZ_58)
law	materially; ad rem; on the merits (дела); on merits (дела Alexander Demidov); matters of fact (Alexander Demidov)
Makarov.	to the purpose; the point
math.	actually; as a matter of fact; in fact; in point of fact; conceptually
patents.	principally (Мирослав9999)
philos.	eminently (Азери)
scient.	below the surface; pertinently (A.Rezvov)
tech.	quite (Мирослав9999)

по существу: 445 phrases in 39 subjects

Accounting	1
Advertising	6
Alternative dispute resolution	4
Audit	4
Australian	1
Business	11
Chess	1
Cinematography	3
Cliche / convention	2
Contextual meaning	1
Corporate governance	1
Diplomacy	20
Economy	10
Electronics	1
European Bank for Reconstruction and Development	2
Finances	1
General	127
Idiomatic	1
Informal	8
Insurance	1
Latin	5
Law	119
Librarianship	1
Makarov	46
Maritime law & Law of the Sea	2
Mathematics	5
Medical	11
Military	10
Notarial practice	3
Patents	10
Pharmacology	1
Politics	8
Procedural law	1
Quality control and standards	1
Rail transport	1
Rhetoric	1
Scientific	12
Trade unions	1
Vulgar	1