It remained the only thorough introduction to the field for decades and is still valuable for its many examples and exercises.
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	2:nsubj|6:nsubj:xsubj	Discourse=elaboration-additional:41->40:0|Entity=(77-abstract-giv:act-cf1*-1-ana)
2	remained	remain	VERB	VBD	Mood=Ind|Number=Sing|Person=3|Tense=Past|VerbForm=Fin	0	root	0:root	_
3	the	the	DET	DT	Definite=Def|PronType=Art	6	det	6:det	Entity=(77-abstract-giv:act-cf1*-4-coref
4	only	only	ADJ	JJ	Degree=Pos	6	amod	6:amod	_
5	thorough	thorough	ADJ	JJ	Degree=Pos	6	amod	6:amod	_
6	introduction	introduction	NOUN	NN	Number=Sing	2	xcomp	2:xcomp	_
7	to	to	ADP	IN	_	9	case	9:case	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	9:det	Entity=(78-abstract-giv:act-cf2-2-coref-Morphology_%28linguistics%29
9	field	field	NOUN	NN	Number=Sing	6	nmod	6:nmod:to	Entity=78)77)
10	for	for	ADP	IN	_	11	case	11:case	_
11	decades	decade	NOUN	NNS	Number=Plur	2	obl	2:obl:for	Entity=(81-time-new-cf3-1-sgl)
12	and	and	CCONJ	CC	_	15	cc	15:cc	Discourse=joint-list_m:42->41:0
13	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	15	cop	15:cop	_
14	still	still	ADV	RB	Degree=Pos	15	advmod	15:advmod	_
15	valuable	valuable	ADJ	JJ	Degree=Pos	2	conj	2:conj:and	_
16	for	for	ADP	IN	_	19	case	19:case	_
17	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	19	nmod:poss	19:nmod:poss	Entity=(82-abstract-new-cf4-3,5-sgl(77-abstract-giv:act-cf1*-1-ana)
18	many	many	ADJ	JJ	Degree=Pos	19	amod	19:amod	_
19	examples	example	NOUN	NNS	Number=Plur	15	obl	15:obl:for	_
20	and	and	CCONJ	CC	_	21	cc	21:cc	_
21	exercises	exercise	NOUN	NNS	Number=Plur	19	conj	15:obl:for|19:conj:and	Entity=82)|SpaceAfter=No
22	.	.	PUNCT	.	_	2	punct	2:punct	_
