First and Later Editions of Some Reflections Upon Marriage

2
Astell, Mary, 1668-1731. Reflections upon marriage. London : printed for R. Wilkin, at the Kingís Head in St. Paulís Church-Yard, 1706.
3
Astell, Mary, 1668-1731. Some reflections upon marriage, London : printed for John Nutt near Stationers-Hall, 1700.
4
Astell, Mary, 1668-1731. Some reflections upon marriage. London : printed for R. Wilkin, at the Kingís Head in St. Paulís Church-Yard, 1703.
5
Astell, Mary, 1668-1731. Some reflections upon marriage. London : printed for William Parker, at the Kingís Head in St. Paulís Church-Yard, M.DCC.XXX. [1730]
6
Astell, Mary, 1668-1731. Some reflections upon marriage. With additions. Dublin : Printed by and for S. Hyde and E. Dobson, and for R. Gunne and R. Owen, Booksellers, M.DCC.XXX. [1730]

Note that the Early English Short Title Catalogue tries to capture every edition printed in English-language presses between 1475 and 1800, but it does not always succeed.  Although the 1730 Dublin edition printed by S. Hyde and E. Dobson seems to be only the third, this is what the EESTC says about it:

Author - personal   LinkAstell, Mary, 1668-1731.
Title   LinkSome reflections upon marriage. With additions.
Edition   The fifth edition.
Publisher/year   LinkDublin : Printed by and for S. Hyde and E. Dobson, and for R. Gunne and R. Owen, Booksellers, M.DCC.XXX. [1730]
Physical descr.   [4],79,[1]p. ;  12o.
General note   Anonymous. By Mary Astell.

Though it is certainly significant that this small duodecimo (12o) pamphlet has gone through five editions during Astell's life time, perhaps it is even more significant that it is still printed anonymously.  See the early publication history of Jonathan Swift's A Modest Proposal, a far more inflammatory pamphlet, for comparison.