"a landmark undertaking" is a correct phrase and can be used in written English.
You can use it to describe a significant task or project, or to refer to a momentous event. For example: "The signing of the peace agreement was a landmark undertaking for both nations."
The advocacy, lobby and capacity building interventions of UN Women and UNICEF and their engagement with traditional leaders has contributed to a landmark step undertaken by one of the female Chief in advancing the rights of girls and boys in Malawi.
This landmark undertaking was the first to provide a comprehensive compilation of data from a variety of sources, including the Centers for Disease Control and Prevention CDCC) and the medical literature.
In May 2010, following a landmark, decade-long study undertaken by teams in 13 countries, the IARC reported that no adverse health effects could be associated with the use of mobile phones.
Still, we undertook a landmark analysis which intends to circumvent a survival bias that artificially inflates the association between vaccination and survival [ 27].
A hot-rod student center by the Los Angeles specialists in architectural endorphins, Craig Hodgetts and Hsin-Ming Fung, is the first stage in an expansion of Craig Ellwood's landmark building undertaken by Richard Koshalek, the center's director.
A landmark analysis of 721 patients was undertaken that compared survival in EPP and non-EPP patients from the start of the fourth month following diagnosis (when 44 of the 58 EPPs had been performed).
10 This landmark study, undertaken in 188 hospitals across seven countries (Czech Republic, France, Germany, Poland, Portugal, Spain and Turkey), examined the effectiveness of quality management systems (QMS) and strategies at organisation, department, professional and patient levels for stroke, acute myocardial infarction (AMI), hip fracture and obstetrics.
Correction to this articleIT WAS one of the largest international scientific collaborations ever undertaken and it led, eventually, to a landmark accomplishment.
The largest mass mobilization effort on AIDS undertaken anywhere in the world, The Red Ribbon Express is a landmark effort.
September 27 , 20138.00am BST This morning, scientists will publish a landmark report on the state of climate change science, a huge undertaking that's years in the making and whose influence will be felt for years to come.
