結果 : ddt pesticide uk
5:18

Do we really need pesticides? - Fernan Pérez-Gálvez

TED-Ed
577,165 回視聴 - 7 年前
1:05

DDT so safe you can eat it 1947

markdcatlin
305,936 回視聴 - 13 年前
0:54

DDT Insecticide Spraying Against Infantile Paralysis 221790-01 | Footage Farm

footagefarm
7,326 回視聴 - 9 年前
0:26

Let's not repeat past mistakes #NoTimeToWaste - DDT

Royal Society Of Chemistry
242 回視聴 - 3 か月前
0:35

Interrupting the Transmission of Malaria Using DDT, India 1962

markdcatlin
6,417 回視聴 - 15 年前
0:48

DDT to prevent Typhus 221029-13.mp4 | Footage Farm

footagefarm
3,268 回視聴 - 13 年前
1:34

Wanda Sykes’ Bizarre Story Of The Mosquito Man | The Graham Norton Show

The Graham Norton Show
122,376 回視聴 - 7 か月前
0:52

DDT: From Miracle Pesticide to Environmental Concerns #Shorts #historyinpictures #trarcade

TR ARCADE
251 回視聴 - 1 年前
23:30

THE STORY OF DDT WWII MIRACLE INSECTICIDE MOSQUITO CONTROL 25124

PeriscopeFilm
6,320 回視聴 - 6 年前
0:19

Kingfisher 5 Litre Garden Pressure Sprayer explained

Sealants and Tools Direct Ltd
60,694 回視聴 - 2 年前
3:51

Dead stuff: The secret ingredient in our food chain - John C. Moore

TED-Ed
817,586 回視聴 - 10 年前
2:30

How to Dispose of the Banned Insecticide DDT

Pests, Weeds & Problems
250 回視聴 - 6 年前
0:21

The Unintended Consequences: How DDT's Success Led to Fox Troubles

Nature's Lens
77 回視聴 - 1 年前
48:03

The Forever Chemical Scandal | Bloomberg Investigates

Bloomberg Originals
2,929,123 回視聴 - 10 か月前
6:35

RR7230B UK WAGING WAR ON INSECTS

AP Archive
10 回視聴 - 9 年前
0:31

Insecticide Use in Slaughterhouses 1955

markdcatlin
451 回視聴 - 13 年前
3:17

DDT ban killed millions due to Malaria - WRONG!

phillips78
3,951 回視聴 - 11 年前
11:54

One Drop of This Poison Could Kill the Whole World

The Infographics Show
2,837,580 回視聴 - 2 年前
1:12

Directions for the Proper Use of Pesticides 1958 CDC

markdcatlin
529 回視聴 - 13 年前
1:55

U S Government Spraying DDT Insecticide on Children 1947 .

shore215 productions
53,901 回視聴 - 4 年前