The phrase "in addendums" is grammatically correct and can be used in written English.
It is typically used to refer to information or material that has been added to a document, such as an additional section or attachment. For example: "In addendum to my previous report, I have included updated statistics on the company's sales figures." "Please refer to the addendums at the end of the document for a detailed breakdown of the budget." "I have attached three addendums to my project proposal, which provide further supporting research for my ideas."
The NNL Program suffered a setback beginning in 1989 when it was perceived as a threat by some private landowner rights organizations and that account is found in Addendum.
In addendum 1 the motivation items are presented.
Multiple cases exist in nature of the use of a haploid state by otherwise diploid eukaryotes, and in addendum 2, I have developed three such examples that I find particularly eloquent i.e. the cases of organisms that go through haploid stages, of the sexual chromosomes and of the endosymbiotic organelles.
As developed in addendum 2, the haplodiploid mode of reproduction of insects such as the hymenoptera (ants, bees, wasps...) corresponds to a very effective way of eliminating recessive mutations, and it is quite remarkable that the hymenoptera represent more than 30% of all insect species.
(and also see note 10 in addendum 4 about the fact that many of these predictions were actually supported by many papers that were already published, but which I discovered only after I had described the model) This article/review/Hypothesis represents a great amount of work.
Underneath was a tongue-in-cheek addendum.
The most comprehensive list of changes to ISC procedures can be found in the Addendums 1 3 of the most recent printed Bulletins of the ISC International Seismological Centree, 2011) and the printed Summaries of the ISC Bulletin (International Seismological Centre, 2017).
In an addendum to the article in the magazine, the Sunday Times confirmed that since finishing the piece, Gill had started taking the drug, known as Nivolumab.
In a written addendum in the Congressional Record, Mr. Hare said the bill would also create high-paying jobs.
The genetic identification, brief clinical history and radiologic appearance of the patient carrying the heterozygous ACTA2 mutation resulting in the R179H change was described in the addendum [ 12] and as patient 6 [ 10], 4 years before she expired.
