A library catalog abstract for Liang Zhongtang's 2014 book lists a chapter topic matching his 2009 essay's title near-verbatim, suggesting incorporation rather than new argument

chinapopulation-policyone-child-policyhistoriographycontested-causationliang-zhongtangsong-jiansourcing-scaffolding

The University of International Business and Economics library's catalog record for Liang Zhongtang's 2014 monograph 中国计划生育政策史论 (China Development Press, 501pp.) summarizes its contents as four items, the fourth being "'一胎化'生育政策产生的时代背景研究" ("research on the era background behind the emergence of the 'one-child' policy"). This is a near-verbatim match — down to the same core phrase, "一胎化" + "時代背景" + "形成/產生" — for the title of Liang's 2009 CUHK essay 「一胎化」政策形成的時代背景, the primary text underlying four existing vault notes.

A title match in a library abstract is not proof the book's chapter is identical text to the 2009 essay, and no vault session has read the book itself to check. [unverified-mechanism — needs primary]. But it is the strongest available evidence bearing on a specific question: whether the book's treatment of Song Jian's causal role is new argument, or a development of material the vault has already read. See also claim-whyte-wang-cai-cite-liang-2014-books-not-2009-essay, which establishes that English-language scholarship cites the book without citing this essay — leaving open whether the two texts actually overlap.