From incidental to planned parenthood : results of the second national fertility survey in Belgium /
by R. L. Cliquet, R. Schoenmaeckers, with co-operation of M. Thiery ... [et al.].
- Leiden : Nijhoff, 1976
- x, 145 p.: ill. ;
- Publications of the Netherlands Interuniversity Demographic Institute (N.I.D.I.) and the Population and Family Study Centre (C.B.G.S.) ; v. 2 .
Abridged translation of Van toevallig naar gepland ouderschap.