There are 2 titles associated with this person.

@book{ wphp_6080
  author={Mears,Martha},
  year={1797},
  title={The pupil of nature; or candid advice to the fair sex, on the subjects of pregnancy; childbirth; the diseases incident to both; the fatal effects of ignorance and quackery; and the most approved means of promoting the health, strength, and beauty of their offspring. By Martha Mears, Practitioner in Midwifery.},
  publisher={},
  address={London},    }
@book{ wphp_13623
  author={Mears,Martha},
  year={1805},
  title={The midwife's candid advice to the fair sex; or the pupil of nature. On the subjects of pregnancy; childbirth; the diseases incident to both; the fatal effects of ignorance and quackery; and the most approved means of promoting the health, strength and beauty of their offspring. In which the Latin Terms are entirely omitted. By Martha Mears, practitioner in midwifery, No. 12, Red Lion Square. A new edition.},
  publisher={Benjamin Crosby and Co. \& Robert Faulder},
  address={London},    }